Temporary files + Some work on threads.h header

inc/stdio.h

@@ -3,56 +3,37 @@
 
 #include <stdarg.h>
 
-#if !defined(NULL)
+// 7.23.3 p.2: Header version
-    #define NULL ((void *)0)
+#define __STDC_VERSION_STDIO_H__ 202311L
-#endif
 
+// 7.23.3 p.3: Types
 #if defined(_WIN32)
     typedef unsigned long long size_t;
 #else
     typedef unsigned long size_t;
 #endif
 
-#if !defined(_mbstate_t_defined)
-    #define _mbstate_t_defined
-    typedef struct mbstate_t mbstate_t;
-    struct mbstate_t {
-        union {
-            unsigned short leftover;
-            unsigned short high_surrogate;
-        };
-    };
-#endif
-
 typedef struct FILE FILE;
 
 typedef struct {
     unsigned long long offset;
-    mbstate_t mbstate;
+    union {
+        unsigned short leftover;
+        unsigned short high_surrogate;
+    } mbstate;
 } fpos_t;
 
+// 7.23.3 p.4: Macros
 #if !defined(NULL)
     #define NULL ((void *)0)
 #endif
 
-#if !defined(__STDC_LIB_EXT1__)
-    #define __STDC_LIB_EXT1__
-    typedef int errno_t;
-    typedef size_t rsize_t;
-#endif
-
-#ifdef __STDC_WANT_SECURE_LIB__
-    #if !defined(__STDC_WANT_LIB_EXT1__)
-        #define __STDC_WANT_LIB_EXT1__ 1
-    #endif
-#endif
-
 #define _IONBF    0
 #define _IOFBF    1
 #define _IOLBF    2
 #define BUFSIZ    512
 #define EOF       (-1)
-#define FOPEN_MAX 1024
+#define FOPEN_MAX 32
 
 #ifdef _os_win
     #define FILENAME_MAX 260
@@ -60,6 +41,8 @@ typedef struct {
     #define FILENAME_MAX 4096
 #endif
 
+#define _PRINTF_NAN_LEN_MAX 20
+
 #define L_tmpnam FILENAME_MAX
 
 #define SEEK_SET 0
@@ -72,17 +55,21 @@ typedef struct {
     #define TMP_MAX INT_MAX
 #endif
 
-extern FILE *stdout;
+#define stdout _internal_stdout
-extern FILE *stderr;
+#define stderr _internal_stderr
-extern FILE *stdin;
+#define stdin  _internal_stdin
+
+extern FILE *_internal_stdout;
+extern FILE *_internal_stderr;
+extern FILE *_internal_stdin;
 
 // File manipulation
 int remove(const char *filename);
 int rename(const char *oldname, const char *newname);
-FILE *tmpfile(void);
-char *tmpnam(char *s);
 
 // Opening and closing files
+char *tmpnam(char *s);
+FILE *tmpfile(void);
 FILE *fopen  (const char *restrict filename, const char *restrict mode);
 FILE *freopen(const char *restrict filename, const char *restrict mode, FILE *restrict stream);
 int   fclose (FILE *stream);

inc/threads.h

@@ -1,10 +1,16 @@
 #pragma once
 
-#define thread_local _Thread_local
+// 7.28.1 p.3: Macros
 
 #define ONCE_FLAG_INIT      1
 #define TSS_DTOR_ITERATIONS 32
 
+// TODO(bumbread): check the spec for whether thread_local needs to be declared
+// in threads.h
+#define thread_local _Thread_local
+
+// 7.28.1 p.4: Types
+
 #if !defined(_timespec_defined)
     #define _timespec_defined
     typedef unsigned long long time_t;
@@ -14,6 +20,7 @@ struct timespec {
     };
 #endif
 
+// TODO(bumbread): move this out to platform-specific folder
 #if defined(_WIN32)
     typedef struct cnd_t {
         int idk_yet;
@@ -41,7 +48,12 @@ typedef struct mtx_t {
 
 typedef void(*tss_dtor_t)  (void*);
 typedef int (*thrd_start_t)(void*);
-typedef int once_flag; // TODO: change this maybe?
+
+// TODO(bumbread): this probably should be a mutex or a semaphore
+// also probably can be implemented with interlocked increment
+typedef int once_flag;
+
+// 7.28.1 p.5: Enumeration constants
 
 enum {
     mtx_plain     = 0,
@@ -57,29 +69,7 @@ enum {
     thrd_nomem
 };
 
-void call_once(once_flag *flag, void (*func)(void));
+// Thread functions
-
-int  cnd_init     (cnd_t *cond);
-int  cnd_broadcast(cnd_t *cond);
-void cnd_destroy  (cnd_t *cond);
-int  cnd_signal   (cnd_t *cond);
-int  cnd_wait     (cnd_t *cond, mtx_t *mtx);
-int  cnd_timedwait(
-    cnd_t *restrict cond,
-    mtx_t *restrict mtx,
-    const struct timespec *restrict ts
-);
-
-void   mtx_destroy  (mtx_t *mtx);
-int    mtx_init     (mtx_t *mtx, int type);
-int    mtx_unlock   (mtx_t *mtx);
-int    mtx_trylock  (mtx_t *mtx);
-int    mtx_lock     (mtx_t *mtx);
-int    mtx_timedlock(
-    mtx_t *restrict mtx,
-    const struct timespec *restrict ts
-);
-
 thrd_t thrd_current(void);
 int    thrd_create (thrd_t *thr, thrd_start_t func, void *arg);
 int    thrd_detach (thrd_t thr);
@@ -92,7 +82,34 @@ int    thrd_sleep(
 );
 _Noreturn void thrd_exit(int res);
 
+// Mutex functions
+void   mtx_destroy  (mtx_t *mtx);
+int    mtx_init     (mtx_t *mtx, int type);
+int    mtx_unlock   (mtx_t *mtx);
+int    mtx_trylock  (mtx_t *mtx);
+int    mtx_lock     (mtx_t *mtx);
+int    mtx_timedlock(
+    mtx_t *restrict mtx,
+    const struct timespec *restrict ts
+);
+
+// Thread-local storage functions
 int   tss_create(tss_t *key, tss_dtor_t dtor);
 void  tss_delete(tss_t  key);
 void *tss_get   (tss_t  key);
 int   tss_set   (tss_t  key, void *val);
+
+// Condition functions
+int  cnd_init     (cnd_t *cond);
+int  cnd_broadcast(cnd_t *cond);
+void cnd_destroy  (cnd_t *cond);
+int  cnd_signal   (cnd_t *cond);
+int  cnd_wait     (cnd_t *cond, mtx_t *mtx);
+int  cnd_timedwait(
+    cnd_t *restrict cond,
+    mtx_t *restrict mtx,
+    const struct timespec *restrict ts
+);
+
+// Call once
+void call_once(once_flag *flag, void (*func)(void));

src/ciabatta.c

@@ -50,7 +50,6 @@
 #include "conv/strpfx.c"
 #include "conv/int.c"
 #include "conv/float.c"
-#include "fmt/fmt.c"
 #include "stdlib/algorithm.c"
 #include "stdlib/multibyte.c"
 #include "stdlib/random.c"
@@ -69,11 +68,11 @@
 #include "os_win/cookie.c"
 #include "os_win/assert.c"
 #include "os_win/cmdline.c"
-#include "os_win/entry.c"
 #include "os_win/environment.c"
 #include "os_win/heap.c"
 #include "os_win/signal.c"
-#include "os_win/stdio.c"
+#include "os_win/file.c"
-#include "os_win/threads.c"
+#include "os_win/thread.c"
 #include "os_win/time.c"
+#include "os_win/entry.c"
 #endif

src/fmt/fmt.c

@@ -1,164 +0,0 @@
-
-#define FLAG_ZERO   0x0001 // "0"
-#define FLAG_LEFT   0x0002 // "-"
-#define FLAG_PLUS   0x0004 // "+"
-#define FLAG_SPACE  0x0008 // " "
-#define FLAG_HASH   0x0010 // "#"
-#define FLAG_PREC   0x0020 // ".precision"
-#define FLAG_LONG   0x0040 // "l"
-#define FLAG_LLONG  0x0080 // "ll"
-#define FLAG_SHORT  0x0100 // "h"
-#define FLAG_CHAR   0x0200 // "hh"
-#define FLAG_UPPER  0x0400 // for hex digits 0xa-0xf
-
-struct fmt_t typedef fmt_t;
-struct fmt_t {
-    int prec;
-    int width;
-    int flags;
-};
-
-#define ctype  char
-#define pfx(f) f
-#include "fmt_string.h"
-#include "fmt_stream.h"
-#include "ints.h"
-#include "fmt.h"
-#undef  ctype
-#undef  pfx
-
-#define ctype  wchar_t
-#define pfx(f) w ## f
-#include "fmt_string.h"
-#include "fmt_stream.h"
-#include "ints.h"
-#include "fmt.h"
-#undef  ctype
-#undef  pfx
-
-// fprintf family
-
-static inline int fstream_outc(void *ctx, char c) {
-    FILE *file = ctx;
-    int result = fputc(c, file);
-    if(result == EOF) {
-        return -1;
-    }
-    return 1;
-}
-
-static inline int fstream_outw(void *ctx, wchar c) {
-    FILE *file = ctx;
-    int result = fputc((char)c, file); // TODO: utf8
-    if(result == EOF) {
-        return -1;
-    }
-    return 1;
-}
-
-static inline fmt_stream_t fstream_new(FILE *file) {
-    fmt_stream_t stream;
-    stream.w = 0;
-    stream.ctx = file;
-    stream.out_ctype = fstream_outc;
-    stream.out_wchar = fstream_outw;
-    stream.out_char = fstream_outc;
-    return stream;
-}
-
-int vfprintf(FILE *restrict file, const char *restrict string, va_list va) {
-    fmt_stream_t stream = fstream_new(file);
-    return fmt(&stream, string, va);
-}
-
-int vprintf(const char *restrict string, va_list va) {
-    return vfprintf(stdout, string, va);
-}
-
-int fprintf(FILE *restrict file, const char *restrict string, ...) {
-    va_list va;
-    va_start(va, string);
-    int result = vfprintf(file, string, va);
-    va_end(va);
-    return result;
-}
-
-int printf(const char *restrict string, ...) {
-    va_list va;
-    va_start(va, string);
-    int result = vfprintf(stdout, string, va);
-    va_end(va);
-    return result;
-}
-
-// s(n)printf family
-
-struct str_slice_t typedef str_slice_t;
-struct str_slice_t {
-    char *str;
-    size_t max_size;
-    size_t written;
-};
-
-static inline int sstream_outc(void *ctx, char c) {
-    str_slice_t *slice = ctx;
-    if(slice->written+1 < slice->max_size) {
-        return -1;
-    }
-    slice->str[slice->written++] = c;
-    return 1;
-}
-
-static inline int sstream_outw(void *ctx, wchar c) {
-    str_slice_t *slice = ctx;
-    // TODO: utf8
-    if(slice->written+1 < slice->max_size) {
-        return -1;
-    }
-    slice->str[slice->written++] = c;
-    return 1;
-}
-
-static inline fmt_stream_t sstream_new(str_slice_t *slice) {
-    fmt_stream_t stream;
-    stream.w = 0;
-    stream.ctx = slice;
-    stream.out_ctype = sstream_outc;
-    stream.out_wchar = sstream_outw;
-    stream.out_char  = sstream_outc;
-    return stream;
-}
-
-int vsnprintf(char *restrict buf, size_t cbbuf, const char *restrict str, va_list va) {
-    str_slice_t slice;
-    slice.str = buf;
-    slice.max_size = cbbuf;
-    slice.written = 0;
-    fmt_stream_t stream = sstream_new(&slice);
-    return fmt(&stream, str, va);
-}
-
-int vsprintf(char *restrict buf, const char *restrict str, va_list va) {
-    str_slice_t slice;
-    slice.str = buf;
-    slice.max_size = SIZE_MAX;
-    slice.written = 0;
-    fmt_stream_t stream = sstream_new(&slice);
-    return fmt(&stream, str, va);
-}
-
-int snprintf(char *restrict buf, size_t cbbuf, const char *restrict str, ...) {
-    va_list va;
-    va_start(va, str);
-    int result = vsnprintf(buf, cbbuf, str, va);
-    va_end(va);
-    return result;
-}
-
-int sprintf(char *restrict buf, const char *restrict str, ...) {
-    va_list va;
-    va_start(va, str);
-    int result = vsprintf(buf, str, va);
-    va_end(va);
-    return result;
-}

src/fmt/fmt.h

@@ -1,44 +0,0 @@
-
-static inline int pfx(fmt_arg)(fmt_stream_t *stream, ctype const **strp, va_list va) {
-    ctype const *str = *strp; 
-    fmt_t fmt = {0};
-    if(!pfx(fmt_read)(str, &fmt, va)) {
-        return 0;
-    }
-    switch(*str) {
-        case 'i':
-        case 'u':
-        case 'b':
-        case 'o':
-        case 'd':
-        case 'x':
-        case 'X':
-        {
-            int base;
-            int sign;
-            u64 abs = pfx(fmt_int_arg)(stream, &fmt, &str, &sign, &base, va);
-            if(pfx(fmt_int)(stream, fmt, sign, abs, base) == -1) {
-                return -1;
-            }
-        } break;
-    }
-    *strp = str;
-    return 1;
-}
-
-static inline int pfx(fmt)(fmt_stream_t *stream, ctype const *str, va_list va) {
-    stream->w = 0;
-    while(*str) {
-        if(*str == '%') {
-            ++str;
-            int ok = pfx(fmt_arg)(stream, &str, va);
-            if(!ok) {
-                return -1;
-            }
-        }
-        else {
-            stream_out(stream, *str++);
-        }
-    }
-    return stream->w;
-}

src/fmt/fmt_stream.h

@@ -1,13 +0,0 @@
-
-struct pfx(fmt_stream_t) typedef pfx(fmt_stream_t);
-struct pfx(fmt_stream_t) {
-    int w;
-    void *ctx;
-    int (*pfx(out_ctype))(void *ctx, ctype ch);
-    int (*pfx(out_wchar))(void *ctx, wchar ch);
-    int (*pfx(out_char)) (void *ctx, char  ch);
-};
-
-#define stream_out(s, ch)  if((s->w++, !s->out_ctype(s->ctx, ch))) return -1
-#define stream_outc(s, ch) if((s->w++, !s->out_char (s->ctx, ch))) return -1
-#define stream_outw(s, ch) if((s->w++, !s->out_wchar(s->ctx, ch))) return -1

src/fmt/fmt_string.h

@@ -1,74 +0,0 @@
-
-static inline int pfx(fmt_isdigit)(ctype ch) {
-    return '0' <= ch && ch <= '9';
-}
-
-static inline int pfx(fmt_atoi)(ctype const **sp, int *err) {
-    int i = 0;
-    ctype const *s = *sp;
-    while(pfx(fmt_isdigit(*s))) {
-        int d = *s-'0';
-        if(i > (INT_MAX - d)/10) {
-            *err = 1;
-            return 0;
-        }
-        i = 10*i + d;
-        ++s;
-    }
-    *sp = s;
-    return i;
-}
-
-static inline int pfx(fmt_read)(const ctype *str, fmt_t *fmt, va_list va) {
-    int flags = 0;
-    // Parse flag field
-    {
-        int isflag = 0;
-        do {
-            isflag = 1;
-            switch(*str) {
-                case '0': flags |= FLAG_ZERO;  break;
-                case '-': flags |= FLAG_LEFT;  break;
-                case '+': flags |= FLAG_PLUS;  break;
-                case ' ': flags |= FLAG_SPACE; break;
-                case '#': flags |= FLAG_HASH;  break;
-                default:  isflag = 0;
-            }
-            if(isflag) ++str;
-        } while(isflag);
-        // If '-' and '0' are together we just discard '0'
-        if(flags & FLAG_LEFT) flags &= ~FLAG_ZERO;
-    }
-    // Parse width field
-    int width = 0;
-    if(pfx(fmt_isdigit(*str))) {
-        int err = 0;
-        width = pfx(fmt_atoi(&str, &err));
-        if(err) return 0;
-    }
-    else if(*str == '*') {
-        ++str;
-        width = va_arg(va, int);
-        if(width < 0) {
-            width = -width;
-            flags |= FLAG_LEFT;
-        }
-    }
-    // If present, parse the precision field
-    int prec = 0;
-    if(*str == '.') {
-        flags |= FLAG_PREC;
-        ++str;
-        if(pfx(fmt_isdigit(*str))) {
-            int err = 0;
-            prec = pfx(fmt_atoi(&str, &err));
-            if(err) return -1;
-        }
-        else if(*str == '*') {
-            ++str;
-            prec = va_arg(va, int);
-            prec = (prec > 0? prec : 0);
-        }
-    }
-    return 1;
-}

src/fmt/gen_fmt.c

@@ -1,95 +0,0 @@
-
-#define ctype     char
-#define pfx(f) f
-#include "gen_fmt.h"
-#undef  ctype
-#undef  pfx
-
-#define ctype     wchar_t
-#define pfx(f) w ## f
-#include "gen_fmt.h"
-#undef  ctype
-#undef  pfx
-
-
-static int fprintfcb(void *ctx, char ch) {
-    FILE *f = ctx;
-    return fputc(ch, f) != EOF;
-}
-
-struct str_ctx_t typedef str_ctx_t;
-struct str_ctx_t {
-    char *str;
-    size_t n;
-    size_t i;
-};
-
-static int sprintfcb(void *ctx, char ch) {
-    str_ctx_t *stream = ctx;
-    stream->str[stream->i++] = ch;
-    return 1;
-}
-
-static int snprintfcb(void *ctx, char ch) {
-    str_ctx_t *stream = ctx;
-    if(stream->i >= stream->n) {
-        return 0;
-    }
-    stream->str[stream->i++] = ch;
-    return 1;
-}
-
-
-int vfprintf(FILE *stream, const char *fmt, va_list args) {
-    return vprintfcb(stream, fprintfcb, fmt, args);
-}
-
-int vprintf(const char *fmt, va_list args) {
-    return vprintfcb(stdout, fprintfcb, fmt, args);
-}
-
-int fprintf(FILE *stream, const char *fmt, ...) {
-    va_list args;
-    va_start(args, fmt);
-    int len = vfprintf(stream, fmt, args);
-    va_end(args);
-    return len;
-}
-
-int printf(const char *fmt, ...) {
-    va_list args;
-    va_start(args, fmt);
-    int len = vprintf(fmt, args);
-    va_end(args);
-    return len;
-}
-
-
-int vsprintf(char *buf, char const *fmt, va_list args) {
-    str_ctx_t ctx = {0};
-    ctx.str = buf;
-    return vprintfcb(&ctx, sprintfcb, fmt, args);
-}
-
-int vsnprintf(char *buf, size_t sz, char const *fmt, va_list args) {
-    str_ctx_t ctx = {0};
-    ctx.str = buf;
-    ctx.n = sz;
-    return vprintfcb(&ctx, snprintfcb, fmt, args);
-}
-
-int sprintf(char *buf, char const *fmt, ...) {
-    va_list args;
-    va_start(args, fmt);
-    int len = vsprintf(buf, fmt, args);
-    va_end(args);
-    return len;
-}
-
-int snprintf(char *buf, size_t sz, char const *fmt, ...) {
-    va_list args;
-    va_start(args, fmt);
-    int len = vsnprintf(buf, sz, fmt, args);
-    va_end(args);
-    return len;
-}

src/fmt/gen_fmt.h

@@ -1,883 +0,0 @@
-
-typedef int (pfx(cbfn))(void *ctx, ctype ch);
-
-#define FLAG_ZERO   0x0001 // "0"
-#define FLAG_LEFT   0x0002 // "-"
-#define FLAG_PLUS   0x0004 // "+"
-#define FLAG_SPACE  0x0008 // " "
-#define FLAG_HASH   0x0010 // "#"
-#define FLAG_PREC   0x0020 // ".precision"
-#define FLAG_LONG   0x0040 // "l"
-#define FLAG_LLONG  0x0080 // "ll"
-#define FLAG_SHORT  0x0100 // "h"
-#define FLAG_CHAR   0x0200 // "hh"
-#define FLAG_UPPER  0x0400 // for hex digits 0xa-0xf
-
-// Helper function declaration
-static inline int pfx(_isdigit)(ctype ch);
-static inline int pfx(_atoi)(ctype const **sp, int *err);
-static inline int pfx(_ntoa)(
-    int w,
-    void *ctx,
-    pfx(cbfn) cb,
-    int neg,
-    unsigned long long value,
-    int base,
-    int prec,
-    int width,
-    int flags
-);
-static inline int pfx(_dtoh)(
-    int w,
-    void *ctx,
-    pfx(cbfn) cb,
-    double value,
-    int prec,
-    int width,
-    int flags
-);
-static inline int pfx(_dtoa)(
-    int w,
-    void *ctx,
-    pfx(cbfn) cb,
-    decfloat_t value,
-    int prec,
-    int width,
-    int flags
-);
-static inline int pfx(_etoa)(
-    int w,
-    void *ctx,
-    pfx(cbfn) cb,
-    decfloat_t value,
-    int prec,
-    int width,
-    int flags
-);
-static inline int pfx(_infnantoa)(
-    int w,
-    void *ctx,
-    pfx(cbfn) cb,
-    double value,
-    int prec,
-    int width,
-    int flags
-);
-
-#define out(ch) do { if((w++, !cb(ctx, (ch)))) return -1; } while(0)
-
-#define print_lwidth_spaces(flags, pad)                                    \
-    do if(!(flags & FLAG_LEFT) && !(flags & FLAG_ZERO)) while(pad-- > 0) { \
-         out(' ');                                                         \
-    }                                                                      \
-    while(0)
-
-#define print_lwidth_zeros(flags, pad)                                     \
-    do if(!(flags & FLAG_LEFT) &&  (flags & FLAG_ZERO)) while(pad-- > 0) { \
-         out('0');                                                         \
-    }                                                                      \
-    while(0)
-
-#define print_rwidth(flags, pad)                                           \
-    if(flags & FLAG_LEFT) while(pad-- > 0) {                               \
-        out(' ');                                                          \
-    }
-
-// Generic print
-static int pfx(vprintfcb)(
-    void *ctx,
-    pfx(cbfn) *cb,
-    const ctype *fmt,
-    va_list va
-) {
-    int w = 0;
-    while(*fmt) {
-        // Write a character if it's not a '%' sign
-        while(*fmt && *fmt != '%') {
-            out(*fmt++);
-            continue;
-        }
-        if(*fmt == '%') {
-            ++fmt;
-        }
-        // Parse flags
-        int flags = 0;
-        int isflag = 0;
-        do {
-            isflag = 1;
-            switch(*fmt) {
-                case '0': flags |= FLAG_ZERO;  break;
-                case '-': flags |= FLAG_LEFT;  break;
-                case '+': flags |= FLAG_PLUS;  break;
-                case ' ': flags |= FLAG_SPACE; break;
-                case '#': flags |= FLAG_HASH;  break;
-                default:  isflag = 0;
-            }
-            if(isflag) ++fmt;
-        } while(isflag);
-        if(flags & FLAG_LEFT) flags &= ~FLAG_ZERO;
-        // Parse width field
-        int width = 0;
-        if(pfx(_isdigit(*fmt))) {
-            int err = 0;
-            width = pfx(_atoi(&fmt, &err));
-            if(err) return -1;
-        }
-        else if(*fmt == '*') {
-            ++fmt;
-            width = va_arg(va, int);
-            if(width < 0) {
-                width = -width;
-                flags |= FLAG_LEFT;
-            }
-        }
-        // If present, parse the precision field
-        int prec = 0;
-        if(*fmt == '.') {
-            flags |= FLAG_PREC;
-            ++fmt;
-            if(pfx(_isdigit(*fmt))) {
-                int err = 0;
-                prec = pfx(_atoi(&fmt, &err));
-                if(err) return -1;
-            }
-            else if(*fmt == '*') {
-                ++fmt;
-                prec = va_arg(va, int);
-                prec = (prec > 0? prec : 0);
-            }
-        }
-        // Parse length field
-        switch(*fmt) {
-        case 'l':
-            ++fmt;
-            flags |= FLAG_LONG;
-            if(*fmt == 'l') {
-                ++fmt;
-                flags |= FLAG_LLONG;
-            }
-            break;
-        case 'h':
-            ++fmt;
-            flags |= FLAG_SHORT;
-            if(*fmt == 'h') {
-                ++fmt;
-                flags |= FLAG_CHAR;
-            }
-            break;
-        case 'j':
-            ++fmt;
-            if(sizeof(intmax_t) == sizeof(long))
-                 flags |= FLAG_LONG;
-            else flags |= FLAG_LLONG;
-            break;
-        case 'z':
-            ++fmt;
-            if(sizeof(size_t) == sizeof(long))
-                 flags |= FLAG_LONG;
-            else flags |= FLAG_LLONG;
-            break;
-        case 't':
-            ++fmt;
-            if(sizeof(ptrdiff_t) == sizeof(long))
-                 flags |= FLAG_LONG;
-            else flags |= FLAG_LLONG;
-            break;
-        case 'L':
-            ++fmt;
-            break;
-        default:
-            break;
-        }
-        // Print according to specifier
-        switch(*fmt) {
-        case 'd':
-        case 'i':
-        case 'u':
-        case 'x':
-        case 'X':
-        case 'o':
-        case 'b': {
-            // Figure out the signedness and base
-            int base = 10;
-            if(*fmt == 'x' || *fmt == 'X') base = 16;
-            if(*fmt == 'o') base = 8;
-            if(*fmt == 'b') base = 2;
-            int signd = (*fmt == 'i' || *fmt == 'd');
-            // Figure out flags
-            if(*fmt == 'X')       flags |= FLAG_UPPER;
-            if(base == 10)        flags &= ~FLAG_HASH;
-            if(!signd)            flags &= ~(FLAG_PLUS|FLAG_SPACE);
-            if(flags & FLAG_PREC) flags &= ~FLAG_ZERO;
-            ++fmt;
-            // Read-in the integer argument from var args
-            int neg = 0;
-            unsigned long long value = 0;
-            if(signd) {
-                long long num;
-                if(flags & FLAG_LLONG)
-                    num = (long long)va_arg(va, long long);
-                else if(flags & FLAG_LONG)
-                    num = (long long)va_arg(va, long);
-                else
-                    num = (long long)va_arg(va, int);
-                // Avoiding UB on unary negation like a bitch
-                if(num == LLONG_MIN) {
-                    neg = 1;
-                    value = (unsigned long long)LLONG_MAX + 1;
-                }
-                else {
-                    neg = num >= 0?   0 :    1;
-                    num = num >= 0? num : -num;
-                    value = (unsigned long long)num;
-                }
-            }
-            else {
-                if(flags & FLAG_LLONG)
-                    value = (unsigned long long)va_arg(va, unsigned long long);
-                else if(flags & FLAG_LONG)
-                    value = (unsigned long long)va_arg(va, unsigned long);
-                else
-                    value = (unsigned long long)va_arg(va, unsigned int);
-            }
-            // Output integer
-            w = pfx(_ntoa)(w, ctx, cb, neg, value, base, prec, width, flags);
-            if(w < 0) return -1;
-        } break;
-        case 'a':
-        case 'A': {
-            if(*fmt == 'A') flags |= FLAG_UPPER;
-            ++fmt;
-            double value = va_arg(va, double);
-            w = pfx(_dtoh)(w, ctx, cb, value, prec, width, flags);
-            if(w < 0) return -1;
-        } break;
-        case 'e':
-        case 'E':
-        case 'f':
-        case 'F':
-        case 'g':
-        case 'G': {
-            if(*fmt == 'E' || *fmt == 'F' || *fmt == 'G') flags |= FLAG_UPPER;
-            char conv = tolower(*fmt);
-            ++fmt;
-            double value = va_arg(va, double);
-            int class = fpclassify(value);
-            if(class == FP_INFINITE || class == FP_NAN) {
-                return pfx(_infnantoa)(w, ctx, cb, value, prec, width, flags);
-            }
-            decfloat_t dec_value = f64_to_decimal(value);
-            if(conv == 'f') {
-                w = pfx(_dtoa)(w, ctx, cb, dec_value, prec, width, flags);
-            }
-            else if(conv == 'e') {
-                w = pfx(_etoa)(w, ctx, cb, dec_value, prec, width, flags);
-            }
-            else {
-                int P = prec;
-                if(!(flags & FLAG_PREC)) P = 6;
-                if(prec == 0) P = 1;
-                int64_t E;
-                {
-                    if(class == FP_ZERO) {
-                        E = 0;
-                    }
-                    else {
-                        E = dec_value.exponent;
-                    }
-                }
-                if(class == FP_SUBNORMAL || class == FP_ZERO) {
-                    E = 0;
-                }
-                flags |= FLAG_PREC;
-                if(P > E && E >= -4) {
-                    w = pfx(_dtoa)(w, ctx, cb, dec_value, P-(E+1), width, flags);
-                }
-                else {
-                    w = pfx(_etoa)(w, ctx, cb, dec_value, P-1, width, flags);
-                }
-            }
-            if(w < 0) return -1;
-        }break;
-        case 'c': {
-            ++fmt;
-            int ch = va_arg(va, int);
-            int pad = width-1;
-            // Print width left-pad
-            if(!(flags & FLAG_LEFT) && !(flags & FLAG_ZERO)) while(pad-- > 0) {
-                out(' ');
-            }
-            out(ch);
-            // Print right-pad
-            if(flags & FLAG_LEFT) while(pad-- > 0) {
-                out(' ');
-            }
-        } break;
-        case 's': {
-            ++fmt;
-            char *str = NULL;
-            wchar_t *wstr = NULL;
-            int len = 0;
-            if(flags & FLAG_LONG) {
-                wstr = va_arg(va, wchar_t *);
-                wchar_t *s = wstr;
-                while(*s++!=0) ++len;
-                int pad = width - len;
-                // Print width left-pad
-                if(!(flags & FLAG_LEFT) && !(flags & FLAG_ZERO)) while(pad-- > 0) {
-                    out(' ');
-                }
-                // Print string
-                mbstate_t ps = {0};
-                for(int i = 0; i < len; ++i) {
-                    if(sizeof(ctype) == 2) {
-                        out(wstr[i]);
-                    }
-                    else {
-                        // char utf8[5];
-                        // char *s = utf8;
-                        // size_t r = c16rtomb(s, wstr[i], &ps);
-                        // if(r == (size_t)(-1)) return -1;
-                        // if(r != 0) {
-                        //     while(*s != 0) {
-                        //         out(*s++);
-                        //     }
-                        // }
-                    }
-                }
-                // Print right-pad
-                if(flags & FLAG_LEFT) while(pad-- > 0) {
-                    out(' ');
-                }
-            }
-            else {
-                str = va_arg(va, char *);
-                char *s = str;
-                if(flags & FLAG_PREC) {
-                    while(*s++!=0 && len<prec) ++len;
-                }
-                else {
-                    while(*s++!=0) ++len;
-                }
-                int pad = width - len;
-                // Print width left-pad
-                if(!(flags & FLAG_LEFT) && !(flags & FLAG_ZERO)) while(pad-- > 0) {
-                    out(' ');
-                }
-                // Print string
-                //mbstate_t ps = {0};
-                for(int i = 0; i < len; ++i) {
-                    out(str[i]);
-                }
-                // Print right-pad
-                if(flags & FLAG_LEFT) while(pad-- > 0) {
-                    out(' ');
-                }
-            }
-        } break;
-        case 'p': {
-            ++fmt;
-            void *ptr = va_arg(va, void *);
-            unsigned long long iptr = (unsigned long long)(uintptr_t)ptr;
-            w = pfx(_ntoa)(w, ctx, cb, 0, iptr, 16, 16, 0, FLAG_HASH);
-            if(w < 0) return -1;
-        } break;
-        case 'n': {
-            ++fmt;
-            int *p = va_arg(va, int *);
-            *p = w;
-        } break;
-        case '%': {
-            ++fmt;
-            out('%');
-        } break;
-        }
-    }
-    return w;
-}
-
-static inline int pfx(_isdigit)(ctype ch) {
-    return '0' <= ch && ch <= '9';
-}
-
-static inline int pfx(_atoi)(ctype const **sp, int *err) {
-    int i = 0;
-    ctype const *s = *sp;
-    while(pfx(_isdigit(*s))) {
-        int d = *s-'0';
-        if(i > (INT_MAX - d)/10) {
-            *err = 1;
-            return 0;
-        }
-        i = 10*i + d;
-        ++s;
-    }
-    *sp = s;
-    return i;
-}
-
-static inline int pfx(_ntoa)(
-    int w,
-    void *ctx,
-    pfx(cbfn) cb,
-    int neg,
-    unsigned long long value,
-    int base,
-    int prec,
-    int width,
-    int flags
-) {
-    // We'll Write digits into buf in reverse and then call _out_rbuf
-    int ndigits = 0;
-    static ctype digits[64];
-    // Remove hash flag for 0 values
-    if(value == 0) flags &= ~FLAG_HASH;
-    // Write digits to buffer in reverse (starting from least significant)
-    do {
-        int d = (int)(value%base);
-        value /= base;
-        if(d < 10)
-             d += '0';
-        else if(flags & FLAG_UPPER)
-             d += 'A' - 10;
-        else d += 'a' - 10;
-        digits[ndigits++] = d;
-    } while(value);
-    // Figure out the length of the prefix (part of number before digit stirng)
-    int pref_len = 0;
-    if(flags & FLAG_HASH)       pref_len = base == 8? 1 : 2;
-    else if(neg)                pref_len = 1;
-    else if(flags & FLAG_PLUS)  pref_len = 1;
-    else if(flags & FLAG_SPACE) pref_len = 1;
-    if(ndigits > prec) prec = ndigits;
-    int num_len = pref_len + prec;
-    int pad_len = width - num_len;
-    if(!(flags & FLAG_LEFT)) {
-        ctype pad_ch = ' ';
-        if(flags & FLAG_ZERO) pad_ch = '0';
-        while(pad_len-- > 0) {
-            out(pad_ch);
-        }
-    }
-    // Print width left-pad if it's made out of space
-    if(!(flags & FLAG_LEFT) && !(flags & FLAG_ZERO)) while(pad_len-- > 0) {
-        out(' ');
-    }
-    // Print prefix
-    if(flags & FLAG_HASH) {
-        out('0');
-        if(base == 16)     { out('x'); }
-        else if(base == 2) { out('b'); }
-    }
-    else if(neg)                { out('-'); }
-    else if(flags & FLAG_PLUS)  { out('+'); }
-    else if(flags & FLAG_SPACE) { out(' '); }
-    // Print width left-pad if it's made out of zero
-    if(!(flags & FLAG_LEFT) && (flags & FLAG_ZERO)) while(pad_len-- > 0) {
-        out('0');
-    }
-    // Print zero-pad due to precision
-    for(int i = ndigits; i < prec; ++i) {
-        out('0');
-    }
-    // Output buffer in reverse
-    if(ndigits) while(ndigits--) {
-        out(digits[ndigits]);
-    }
-    // Print right-pad
-    if(flags & FLAG_LEFT) while(pad_len-- > 0) {
-        out(' ');
-    }
-    return w;
-}
-
-static inline int pfx(_infnantoa)(
-    int w,
-    void *ctx,
-    pfx(cbfn) cb,
-    double value,
-    int prec,
-    int width,
-    int flags
-) {
-    char const *name = NULL;
-    int nchars = 0;
-    if(isinf(value)) name = "inf", nchars = 3;
-    if(isnan(value)) name = "nan", nchars = 3;
-    // Figure out prefix
-    int pref_len = 0;
-    u64 bits = F64_BITS(value);
-    u64 mant = F64_MANT(bits);
-    int neg = F64_SIGN(bits) & (mant == 0);
-    if(neg) pref_len = 1;
-    else if(flags & FLAG_PLUS) pref_len = 1;
-    else if(flags & FLAG_SPACE) pref_len = 1;
-    // Figure out pad
-    int str_len = pref_len + nchars;
-    int pad_len = width - str_len;
-    // Print left-pad
-    if(!(flags & FLAG_LEFT)) {
-        while(pad_len-- > 0) {
-            out(' ');
-        }
-    }
-    // Print the prefix
-    if(neg)                     out('-');
-    else if(flags & FLAG_PLUS)  out('+');
-    else if(flags & FLAG_SPACE) out(' ');
-    // Print the string
-    while(*name) {
-        out(*name++);
-    }
-    // Print right-pad
-    if(flags & FLAG_LEFT) {
-        while(pad_len-- > 0) {
-            out(' ');
-        }
-    }
-    return w;
-}
-
-static inline int pfx(_dtoh)(
-    int w,
-    void *ctx,
-    pfx(cbfn) cb,
-    double value,
-    int prec,
-    int width,
-    int flags
-) {
-    // Filter out inifnities and NaN
-    {
-        int class = fpclassify(value);
-        if(class == FP_INFINITE || class == FP_NAN) {
-            return pfx(_infnantoa)(w, ctx, cb, value, prec, width, flags);
-        }
-    }
-    // Deconstruct the float
-    u64 bits = F64_BITS(value);
-    u64 flt_sgn = F64_SIGN(bits);
-    u64 flt_mnt = F64_MANT(bits);
-    i64 flt_exp = F64_BEXP(bits);
-    u64 frc;
-    u64 mnt;
-    i64 exp;
-    {
-        mnt = flt_mnt;
-        exp = flt_exp - 0x3ff;
-        if(flt_exp == 0 && flt_mnt == 0) {
-            exp = 0;
-        }
-    }
-    // Calculate widths of different number parts and extract some data
-    static ctype frc_buffer[64] = {0};
-    static ctype exp_buffer[64] = {0};
-    ctype *frc_buf = frc_buffer + sizeof frc_buffer;
-    ctype *exp_buf = exp_buffer + sizeof exp_buffer;
-    ctype sgn_ch;
-    ctype exp_sgn_ch;
-    int has_sgn;
-    int has_point;
-    int nfrc = 0;
-    int nexp = 0;
-    int nfrcp = 0;
-    {
-        // Sign
-        if(flt_sgn) {
-            has_sgn = 1;
-            sgn_ch  = '-';
-        }
-        else if(flags & FLAG_PLUS) {
-            has_sgn = 1;
-            sgn_ch  = '+';
-        }
-        else if(flags & FLAG_SPACE) {
-            has_sgn = 1;
-            sgn_ch  = ' ';
-        }
-        // Fractional part
-        frc = mnt;
-        if(frc != 0) {
-            while(!(frc & 0xf)) {
-                frc >>= 4;
-            }
-        }
-        u64 f = frc;
-        do {
-            int d = f % 16;
-            f /= 16;
-            *--frc_buf = fromdigit(d, flags & FLAG_UPPER);
-        } while(f != 0);
-        // Frac/whole digits
-        if(flags & FLAG_PREC) {
-            nfrcp = prec;
-        }
-        else {
-            nfrcp = nfrc;
-        }
-        // Decimal point
-        has_point = 1;
-        if(nfrc == 0 && !(flags & FLAG_HASH)) {
-            has_point = 0;
-        }
-        // Exponent
-        i64 e = exp;
-        if(e < 0) {
-            exp_sgn_ch = '-';
-            e = -e;
-        }
-        else {
-            exp_sgn_ch = '+';
-        }
-        do {
-            *--exp_buf = (e%10) + '0';
-            e /= 10;
-            nexp ++;
-        } while(e != 0);
-    }
-    // Figure out the width of a float
-    int nfloat = has_sgn + 2 + 1 + has_point + nfrcp + 1 + 1 + nexp;
-    int pad = MIN(0, width - nfloat);
-    print_lwidth_spaces(flags, pad);
-    if(has_sgn) {
-        out(sgn_ch);
-    }
-    out('0');
-    out((flags & FLAG_UPPER)? 'X' : 'x');
-    print_lwidth_zeros(flags, pad);
-    out((flt_exp == 0) ? '0' : '1');
-    if(has_point) {
-        out('.');
-    }
-    int i;
-    for(i = 0; i != nfrcp; ++i) {
-        if(i < nfrc) {
-            out(frc_buf[i]);
-        }
-        else {
-            out('0');
-        }
-    }
-    out((flags & FLAG_UPPER)? 'P' : 'p');
-    out(exp_sgn_ch);
-    for(int i = 0; i != nexp; ++i) {
-        out(exp_buf[i]);
-    }
-    print_rwidth(flags, pad);
-    return w;
-}
-
-static inline int pfx(_dtoa)(
-    int w,
-    void *ctx,
-    pfx(cbfn) cb,
-    decfloat_t value,
-    int prec,
-    int width,
-    int flags
-) {
-    int64_t exp = value.exponent;
-    int64_t mant = value.mantissa;
-    // Figure out how many digits does mantissa take up (mant_digits_n)
-    // and the number of digits after decimal point (prec)
-    // and the number of digits before decimal point (while_digits_n)
-    static ctype mant_buf[64] = {0};
-    int whole_digits_n;
-    int mant_digits_n = 0;
-    {
-        int64_t m = mant;
-        do {
-            mant_buf[mant_digits_n++] = m % 10 + '0';
-            m /= 10;
-        } while(m != 0);
-    }
-    if((flags & FLAG_PREC) == 0) {
-        prec = 6;
-    }
-    whole_digits_n = mant_digits_n + exp;
-    if(whole_digits_n <= 0) whole_digits_n = 1;
-    // Figure out how many symbols decimal point takes up (0 or 1)
-    int decimal_point_n = 1;
-    if(prec == 0) {
-        decimal_point_n = 0;
-        if(flags & FLAG_HASH) {
-            decimal_point_n = 1;
-        }
-    }
-    // Figure out sign symbol and number of chars it takes up (0 or 1)
-    int sign_n = 0;
-    ctype sign_ch;
-    if(value.sign) {
-        sign_n = 1;
-        sign_ch = '-';
-    }
-    else if(flags & FLAG_PLUS) {
-        sign_n = 1;
-        sign_ch = '+';
-    }
-    else if(flags & FLAG_SPACE) {
-        sign_n = 1;
-        sign_ch = ' ';
-    }
-    // Figure out the width of the number
-    int significand_width = whole_digits_n + decimal_point_n + prec;
-    int n_width = sign_n + significand_width;
-    // Figure out width-padding required
-    int pad = 0;
-    if(width > n_width) pad = width - n_width;
-    // Print width left-pad if it's made out of space
-    if(!(flags & FLAG_LEFT) && !(flags & FLAG_ZERO)) while(pad-- > 0) {
-        out(' ');
-    }
-    // Print sign if there
-    if(sign_n)
-        out(sign_ch);
-    // Print width left-pad if it's made out of zero
-    if(!(flags & FLAG_LEFT) && (flags & FLAG_ZERO)) while(pad-- > 0) {
-        out('0');
-    }
-    // Print whole part
-    while(whole_digits_n--) {
-        if(-exp >= mant_digits_n) {
-            out('0');
-        }
-        else {
-            out(mant_buf[--mant_digits_n]);
-        }
-        ++exp;
-    }
-    // Print decimal point
-    if(decimal_point_n) out('.');
-    // Print fractional part that's made out of digits
-    int prec_digs = prec < mant_digits_n ? prec : mant_digits_n;
-    while(mant_digits_n < prec_digs) {
-        if(-exp >= mant_digits_n) {
-            out('0');
-        }
-        else {
-            out(mant_buf[--mant_digits_n]);
-        }
-        ++exp;
-    }
-    while(prec_digs-- > 0) {
-        out('0');
-    }
-    // Print right-pad
-    if(flags & FLAG_LEFT) while(pad-- > 0) {
-        out(' ');
-    }
-    return w;
-}
-
-static inline int pfx(_etoa)(
-    int w,
-    void *ctx,
-    pfx(cbfn) cb,
-    decfloat_t value,
-    int prec,
-    int width,
-    int flags
-) {
-    int64_t exp = value.exponent;
-    int64_t mant = value.mantissa;
-    // Figure out how many digits does mantissa take up (mant_digits_n)
-    // and the number of digits after decimal point (prec)
-    static ctype mant_buf[64] = {0};
-    int mant_digits_n = 0;
-    {
-        int64_t m = mant;
-        do {
-            mant_buf[mant_digits_n++] = m % 10 + '0';
-            m /= 10;
-        } while(m != 0);
-    }
-    mant_digits_n -= 1;
-    // Need to adjust exponent based on the amount of digits in the mantissa
-    exp += mant_digits_n;
-    if((flags & FLAG_PREC) == 0) {
-        prec = 6;
-    }
-    // Figure out how many symbols decimal point takes up (0 or 1)
-    int decimal_point_n = 1;
-    if(prec == 0) {
-        decimal_point_n = 0;
-        if(flags & FLAG_HASH) {
-            decimal_point_n = 1;
-        }
-    }
-    // Figure out how many digits exponent take up and it's sign
-    // also save exponent digits to a buffer starting from LSD
-    static ctype exp_buf[64] = {0};
-    int exp_digits_n = 0;
-    ctype exp_sign;
-    if(exp < 0) {
-        exp_sign = '-';
-        exp = -exp;
-    }
-    else {
-        exp_sign = '+';
-    }
-    {
-        int64_t e = exp;
-        do {
-            exp_buf[exp_digits_n++] = e % 10 + '0';
-            e /= 10;
-        } while(e != 0);
-    }
-    // Figure out sign symbol and number of chars it takes up (0 or 1)
-    int sign_n = 0;
-    ctype sign_ch;
-    if(value.sign) {
-        sign_n = 1;
-        sign_ch = '-';
-    }
-    else if(flags & FLAG_PLUS) {
-        sign_n = 1;
-        sign_ch = '+';
-    }
-    else if(flags & FLAG_SPACE) {
-        sign_n = 1;
-        sign_ch = ' ';
-    }
-    // Figure out the width of the number
-    int significand_width = 1 + decimal_point_n + prec;
-    int exp_part_width = 2 /*e+-*/ + exp_digits_n;
-    int n_width = sign_n + significand_width + exp_part_width;
-    // Figure out width-padding required
-    int pad = 0;
-    if(width > n_width) pad = width - n_width;
-    // Print width left-pad if it's made out of space
-    if(!(flags & FLAG_LEFT) && !(flags & FLAG_ZERO)) while(pad-- > 0) {
-        out(' ');
-    }
-    // Print sign if there
-    if(sign_n)
-        out(sign_ch);
-    // Print width left-pad if it's made out of zero
-    if(!(flags & FLAG_LEFT) && (flags & FLAG_ZERO)) while(pad-- > 0) {
-        out('0');
-    }
-    // Print whole part
-    out(mant_buf[mant_digits_n]);
-    // Print decimal point
-    if(decimal_point_n) out('.');
-    // Print precision padding
-    for(int i = mant_digits_n; i < prec; ++i) {
-        out('0');
-    }
-    if(prec < mant_digits_n) mant_digits_n = prec;
-    while(mant_digits_n--)
-        out(mant_buf[mant_digits_n]);
-    // Print the exponent part
-    out((flags & FLAG_UPPER)? 'E' : 'e');
-    out(exp_sign);
-    while(exp_digits_n--)
-        out(exp_buf[exp_digits_n]);
-    // Print right-pad
-    if(flags & FLAG_LEFT) while(pad-- > 0) {
-        out(' ');
-    }
-    return w;
-}
-
-#undef out

src/fmt/ints.h

@@ -1,150 +0,0 @@
-
-static inline u64 pfx(fmt_int_arg)(
-    fmt_stream_t *stream,
-    fmt_t *fmt,
-    ctype const **strp,
-    int *signp,
-    int *basep,
-    va_list va
-) {
-    ctype const *str = *strp;
-    // Get integer properties
-    int base;
-    int is_signed;
-    switch(*str) {
-        case 'o': base = 8; break;
-        case 'b': base = 2; break;
-        case 'x':
-        case 'X': base = 16; break;
-        default:  base = 10;
-    }
-    switch(*str) {
-        case 'd': is_signed = 1; break;
-        case 'i': is_signed = 1; break;
-        default:  is_signed = 0;
-    }
-    if(*str == 'X') {
-        fmt->flags |= FLAG_UPPER;
-    }
-    // Discard some flags
-    if(base == 10) {
-        fmt->flags &= ~FLAG_HASH;
-    }
-    if(!is_signed) {
-        fmt->flags &= ~(FLAG_PLUS|FLAG_SPACE);
-    }
-    if(fmt->flags & FLAG_PREC) {
-        fmt->flags &= ~FLAG_ZERO;
-    }
-    // Parse sign and abs value of an integer
-    int sign = 0;
-    u64 abs_value = 0;
-    if(is_signed) {
-        i64 num;
-        if(fmt->flags & FLAG_LLONG) {
-            num = (i64)va_arg(va, intll);
-        }
-        else if(fmt->flags & FLAG_LONG) {
-            num = (i64)va_arg(va, intl);
-        }
-        else {
-            num = (i64)va_arg(va, int);
-        }
-        // Handle overflow on '-'
-        if(num == LLONG_MIN) {
-            sign = 1;
-            abs_value = (u64)LLONG_MAX + 1;
-        }
-        else {
-            sign = num >= 0?   0 :    1;
-            num = num >= 0? num : -num;
-            abs_value = (u64)num;
-        }
-    }
-    else {
-        if(fmt->flags & FLAG_LLONG) {
-            abs_value = (u64)va_arg(va, intull);
-        }
-        else if(fmt->flags & FLAG_LONG) {
-            abs_value = (u64)va_arg(va, intul);
-        }
-        else {
-            abs_value = (u64)va_arg(va, intu);
-        }
-    }
-    ++str;
-    *strp = str;
-    *basep = base;
-    *signp = sign;
-    return abs_value;
-}
-
-static inline int pfx(fmt_int)(
-    fmt_stream_t *stream,
-    fmt_t fmt,
-    int neg,
-    u64 value,
-    int base) {
-    // We'll Write digits into buf in reverse and then call _out_rbuf
-    int ndigits = 0;
-    ctype digits[64] = {0};
-    // Remove hash flag for 0 values
-    if(value == 0) fmt.flags &= ~FLAG_HASH;
-    // Write digits to buffer in reverse (starting from least significant)
-    do {
-        int d = (int)(value%base);
-        value /= base;
-        if(d < 10)
-             d += '0';
-        else if(fmt.flags & FLAG_UPPER)
-             d += 'A' - 10;
-        else d += 'a' - 10;
-        digits[ndigits++] = d;
-    } while(value);
-    // Figure out the length of the prefix (part of number before digit stirng)
-    int pref_len = 0;
-    if(fmt.flags & FLAG_HASH)       pref_len = base == 8? 1 : 2;
-    else if(neg)                pref_len = 1;
-    else if(fmt.flags & FLAG_PLUS)  pref_len = 1;
-    else if(fmt.flags & FLAG_SPACE) pref_len = 1;
-    if(ndigits > fmt.prec) fmt.prec = ndigits;
-    int num_len = pref_len + fmt.prec;
-    int pad_len = fmt.width - num_len;
-    if(!(fmt.flags & FLAG_LEFT)) {
-        ctype pad_ch = ' ';
-        if(fmt.flags & FLAG_ZERO) pad_ch = '0';
-        while(pad_len-- > 0) {
-            stream_out(stream, pad_ch);
-        }
-    }
-    // Print width left-pad if it's made out of space
-    if(!(fmt.flags & FLAG_LEFT) && !(fmt.flags & FLAG_ZERO)) while(pad_len-- > 0) {
-        stream_out(stream, ' ');
-    }
-    // Print prefix
-    if(fmt.flags & FLAG_HASH) {
-        stream_out(stream, '0');
-        if(base == 16)     { stream_out(stream, 'x'); }
-        else if(base == 2) { stream_out(stream, 'b'); }
-    }
-    else if(neg)                { stream_out(stream, '-'); }
-    else if(fmt.flags & FLAG_PLUS)  { stream_out(stream, '+'); }
-    else if(fmt.flags & FLAG_SPACE) { stream_out(stream, ' '); }
-    // Print width left-pad if it's made out of zero
-    if(!(fmt.flags & FLAG_LEFT) && (fmt.flags & FLAG_ZERO)) while(pad_len-- > 0) {
-        stream_out(stream, '0');
-    }
-    // Print zero-pad due to precision
-    for(int i = ndigits; i < fmt.prec; ++i) {
-        stream_out(stream, '0');
-    }
-    // Output buffer in reverse
-    if(ndigits) while(ndigits--) {
-        stream_out(stream, digits[ndigits]);
-    }
-    // Print right-pad
-    if(fmt.flags & FLAG_LEFT) while(pad_len-- > 0) {
-        stream_out(stream, ' ');
-    }
-    return stream->w;
-}

src/os_win/assert.c

@@ -18,12 +18,12 @@ static void _print_stack_trace() {
         SymFromAddr(process, (DWORD64)stack[i], 0, symbol);
         // if(strcmp(symbol->Name, "BaseThreadInitThunk") == 0) break;
         // if(strcmp(symbol->Name, "mainCRTStartup") == 0)      break;
-        printf(//"  %u: 0x%"PRIx64" (%s)\n",
+        // printf(//"  %u: 0x%"PRIx64" (%s)\n",
-            "  %d: %s\n",
+        //     "  %d: %s\n",
-            (int)(frames-i-1),
+        //     (int)(frames-i-1),
-            //symbol->Address,
+        //     //symbol->Address,
-            symbol->Name
+        //     symbol->Name
-        );
+        // );
     }
     free(symbol);
 }
@@ -39,10 +39,10 @@ void _assert(
         // For GUI application we display the info into a messagebox
         char buf[1024];
         int i = 0;
-        i += snprintf(buf+i, sizeof buf-i, "Assertion failed: %s\n", cond);
+        // i += snprintf(buf+i, sizeof buf-i, "Assertion failed: %s\n", cond);
-        i += snprintf(buf+i, sizeof buf-i, "  Function: %s\n", func);
+        // i += snprintf(buf+i, sizeof buf-i, "  Function: %s\n", func);
-        i += snprintf(buf+i, sizeof buf-i, "  File: %s\n", file);
+        // i += snprintf(buf+i, sizeof buf-i, "  File: %s\n", file);
-        i += snprintf(buf+i, sizeof buf-i, "  Line: %d\n", line);
+        // i += snprintf(buf+i, sizeof buf-i, "  Line: %d\n", line);
 display_msg:
         int reaction = MessageBoxA(NULL, buf, "Assertion Failed", 0x00000032L);
         switch(reaction) {
@@ -53,11 +53,11 @@ display_msg:
     }
     else {
         // For console application we print the info to console
-        printf("Assertion failed: %s\n", cond);
+        // printf("Assertion failed: %s\n", cond);
-        printf("  Function: %s\n", func);
+        // printf("  Function: %s\n", func);
-        printf("  File: %s\n", file);
+        // printf("  File: %s\n", file);
-        printf("  Line: %d\n", line);
+        // printf("  Line: %d\n", line);
-        printf("Trace:\n");
+        // printf("Trace:\n");
         _print_stack_trace();
         abort();
     }

src/os_win/cookie.c

@@ -9,7 +9,7 @@ void __security_init_cookie() {
 
 void __security_check_cookie(u64 retrieved) {
     if(__security_cookie != retrieved) {
-        printf("Bro you've got a buffer overrun\n");
+        // printf("Bro you've got a buffer overrun\n");
         abort();
     }
 }

src/os_win/entry.c

@@ -11,7 +11,7 @@ _Noreturn void mainCRTStartup() {
     _setup_eh();
     _setup_heap();
     _setup_timer();
-    _setup_io();
+    _io_init();
     __security_init_cookie();
 
     srand(0);
@@ -28,7 +28,7 @@ _Noreturn void mainCRTStartup() {
     _setup_eh();
     _setup_heap();
     _setup_timer();
-    _setup_io();
+    _io_init();
     __security_init_cookie();
 
     srand(0);

src/os_win/environment.c

@@ -34,7 +34,7 @@ _Noreturn void exit(int status) {
     while(atexit_func_count--) {
         atexit_funcs[atqexit_func_count]();
     }
-    _close_io();
+    _io_close();
     _Exit(status);
 }
 

src/os_win/file.c

@@ -1,23 +1,17 @@
 
-enum stream_width_t {
+enum FileMode {
-    STREAM_CHAR_UNSET,
+    MODE_INPUT,
-    STREAM_CHAR_NARROW,
+    MODE_OUTPUT,
-    STREAM_CHAR_WIDE,
+    MODE_UPDATE,
-} typedef stream_width_t;
+} typedef FileMode;
 
-enum stream_io_mode_t {
+enum FileType {
-    STREAM_INPUT,
+    FILE_BINARY,
-    STREAM_OUTPUT,
+    FILE_TEXT,
-    STREAM_UPDATE,
+} typedef FileType;
-} typedef stream_io_mode_t;
 
-enum stream_bt_mode_t {
+struct FileBuffer typedef FileBuffer;
-    STREAM_BINARY,
+struct FileBuffer {
-    STREAM_TEXT,
-} typedef stream_bt_mode_t;
-
-struct stream_buffer_t typedef stream_buffer_t;
-struct stream_buffer_t {
     int is_internal;
     int mode;
     size_t size;
@@ -27,14 +21,15 @@ struct stream_buffer_t {
 
 struct FILE {
     HANDLE handle;
-    stream_width_t   char_width; // This technically needs not be stored
     mbstate_t mbstate;
-    stream_buffer_t  buffer;
+    FileBuffer buffer;
-    stream_io_mode_t io_mode;
+    FileMode io_mode;
-    stream_bt_mode_t bt_mode;
+    FileType bt_mode;
     int eof;
     int err;
     mtx_t lock;
+    bool temp;
+    char *temp_name;
     FILE *prev;
     FILE *next;
 };
@@ -46,108 +41,121 @@ FILE *stderr;
 // We hold a linked list of all file streams in order to flush all the buffers
 // after the program terminates. It might be not a good idea to store all the
 // files into this linked list, but for now performance is not a concern.
-static FILE *streams_to_close = NULL;
 
-static void close_list_add(FILE *stream) {
+static FILE *_file_tracker = NULL;
-    if(streams_to_close != NULL) {
+
-        streams_to_close->next = stream;
+static void _file_track(FILE *stream) {
-        stream->prev = streams_to_close;
+    if(_file_tracker != NULL) {
+        _file_tracker->next = stream;
+        stream->prev = _file_tracker;
         stream->next = NULL;
-        streams_to_close = stream;
+        _file_tracker = stream;
     }
     else {
-        streams_to_close = stream;
+        _file_tracker = stream;
         stream->prev = NULL;
         stream->next = NULL;
     }
 }
 
-static void close_list_remove(FILE *stream) {
+static void _file_untrack(FILE *stream) {
     FILE *prev = stream->prev;
     FILE *next = stream->next;
     if(prev != NULL) prev->next = next;
     if(next != NULL) next->prev = prev;
-    if(next == NULL) streams_to_close = prev;
+    if(next == NULL) _file_tracker = prev;
 }
 
-static inline void init_stream(
+// Multithreaded access
-    FILE *stream,
+
-    HANDLE handle,
+static inline void _file_lock_init(FILE *stream) {
-    stream_io_mode_t io_mode,
+    mtx_init(&stream->lock, mtx_recursive);
-    stream_bt_mode_t bt_mode
+}
-) {
+
+static inline void _file_lock_destroy(FILE *stream) {
+    mtx_destroy(&stream->lock);
+}
+
+static inline void _file_lock(FILE *stream) {
+    mtx_lock(&stream->lock);
+}
+
+static inline void _file_unlock(FILE *stream) {
+    mtx_unlock(&stream->lock);
+}
+
+// Managing file handles
+
+static inline FILE *_file_create(HANDLE handle, FileMode io_mode, FileType bt_mode) {
+    FILE *stream = calloc(1, sizeof(FILE));
+    if(stream == NULL) {
+        return NULL;
+    }
     stream->handle = handle;
-    stream->char_width = STREAM_CHAR_UNSET;
-    stream->mbstate = (mbstate_t){0};
-    stream->buffer.mode = _IONBF;
     stream->io_mode = io_mode;
     stream->bt_mode = bt_mode;
-    stream->eof = 0;
+    _file_lock_init(stream);
-    stream->err = 0;
+    _file_track(stream);
-}
-
-static inline FILE *create_stream(
-    HANDLE handle,
-    stream_io_mode_t io_mode,
-    stream_bt_mode_t bt_mode
-) {
-    FILE *stream = malloc(sizeof(FILE));
-    if(stream == NULL) return NULL;
-    init_stream(stream, handle, io_mode, bt_mode);
-    mtx_init(&stream->lock, mtx_recursive);
-    close_list_add(stream);
     return stream;
 }
 
-static inline void delete_stream(FILE *stream) {
+static inline void _file_close(FILE *stream) {
-    mtx_t lock = stream->lock;
+    _file_lock(stream);
-    mtx_lock(&lock);
     CloseHandle(stream->handle);
-    close_list_remove(stream);
+    _file_untrack(stream);
+    _file_unlock(stream);
+    _file_lock_destroy(stream);
     free(stream);
-    mtx_unlock(&lock);
-    mtx_destroy(&lock);
 }
 
-static void _setup_io() {
+static void _io_init() {
     HANDLE hstdout = GetStdHandle(STD_OUTPUT_HANDLE);
     HANDLE hstderr = GetStdHandle(STD_ERROR_HANDLE);
     HANDLE hstdin  = GetStdHandle(STD_INPUT_HANDLE);
 
-    stdout = create_stream(hstdout, STREAM_UPDATE, STREAM_TEXT);
+    stdout = _file_create(hstdout, MODE_UPDATE, FILE_TEXT);
-    stderr = create_stream(hstderr, STREAM_UPDATE, STREAM_TEXT);
+    stderr = _file_create(hstderr, MODE_UPDATE, FILE_TEXT);
-    stdin  = create_stream(hstdin,  STREAM_INPUT,  STREAM_BINARY);
+    stdin  = _file_create(hstdin,  MODE_INPUT,  FILE_BINARY);
 
     char *in_buf  = calloc(BUFSIZ, sizeof(char));
     char *out_buf = calloc(BUFSIZ, sizeof(char));
-    stdin->buffer  = (stream_buffer_t){1, _IOLBF, BUFSIZ, in_buf};
+    stdin->buffer  = (FileBuffer){1, _IOLBF, BUFSIZ, in_buf};
-    stdout->buffer = (stream_buffer_t){1, _IOLBF, BUFSIZ, out_buf};
+    stdout->buffer = (FileBuffer){1, _IOLBF, BUFSIZ, out_buf};
-    stderr->buffer = (stream_buffer_t){1, _IONBF,      0, NULL};
+    stderr->buffer = (FileBuffer){1, _IONBF,      0, NULL};
 
-    SetConsoleCP(CP_UTF8);  // maybe will work someday
+    SetConsoleCP(CP_UTF8); // Maybe it will work someday
     SetConsoleOutputCP(CP_UTF8);
 }
 
-int win_parse_mode(
+static void _io_close() {
-    char const *mode,
+    while(_file_tracker != NULL) {
-    stream_io_mode_t *pio_mode,
+        FILE *stream = _file_tracker;
-    stream_bt_mode_t *pbt_mode,
+        fclose(stream);
-    DWORD *paccess,
+    }
-    DWORD *pshare,
+}
-    DWORD *pdisp
+
-) {
+// File mode parsing
+
+struct WindowsMode typedef WindowsMode;
+struct WindowsMode {
+    DWORD access;
+    DWORD share;
+    DWORD disp;
+};
+
+static int _mode_parse(char const *mode, FileMode *pio_mode, FileType *pbt_mode, WindowsMode *win_mode) {
     DWORD access = 0;
     DWORD share = 0;
     DWORD disp = 0;
-    stream_io_mode_t io_mode = 0;
+    FileMode io_mode = 0;
-    stream_bt_mode_t bt_mode = 0;
+    FileType bt_mode = 0;
     int flag_p = 0;
     int flag_b = 0;
     int flag_x = 0;
     switch(*mode++) {
-        case 'r': io_mode = STREAM_INPUT;  break;
+        case 'r': io_mode = MODE_INPUT;  break;
-        case 'w': io_mode = STREAM_OUTPUT; break;
+        case 'w': io_mode = MODE_OUTPUT; break;
-        case 'a': io_mode = STREAM_UPDATE; break;
+        case 'a': io_mode = MODE_UPDATE; break;
         default: return 0;
     }
     while(*mode) switch(*mode++) {
@@ -156,15 +164,14 @@ int win_parse_mode(
         case 'x': flag_x = 1; break;
         default: return 0;
     }
-    bt_mode = flag_b? STREAM_BINARY : STREAM_TEXT;
+    bt_mode = flag_b? FILE_BINARY : FILE_TEXT;
-    // Not sure about the sharing modes
     switch(io_mode) {
-        case STREAM_INPUT: {
+        case MODE_INPUT: {
             access = GENERIC_READ | (flag_p? GENERIC_WRITE : 0);
             share  = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE;
             disp   = OPEN_EXISTING;
         } break;
-        case STREAM_OUTPUT: {
+        case MODE_OUTPUT: {
             access = GENERIC_WRITE | (flag_p? GENERIC_READ : 0);
             share  = 0;
             disp   = CREATE_ALWAYS;
@@ -172,37 +179,82 @@ int win_parse_mode(
                 disp = CREATE_NEW;
             }
         } break;
-        case STREAM_UPDATE: {
+        case MODE_UPDATE: {
             access = GENERIC_READ | GENERIC_WRITE;
             share  = 0;
             disp   = OPEN_ALWAYS;
         } break;
     }
-    *paccess = access;
+    win_mode->access = access;
-    *pshare = share;
+    win_mode->share = share;
-    *pdisp = disp;
+    win_mode->disp = disp;
     *pio_mode = io_mode;
     *pbt_mode = bt_mode;
     return 1;
 }
 
-FILE *fopen(const char *restrict name, const char *restrict mode) {
+// Operations on files
-    DWORD access;
+
-    DWORD share;
+int remove(const char *filename) {
-    DWORD disp;
+    BOOL ok = DeleteFileA(filename);
-    DWORD flags = FILE_FLAG_WRITE_THROUGH;
+    return !ok;
-    stream_io_mode_t io_mode;
+}
-    stream_bt_mode_t bt_mode;
+
-    if(!win_parse_mode(mode, &io_mode, &bt_mode, &access, &share, &disp)) {
+int rename(const char *old, const char *new) {
+    BOOL ok = MoveFileA(old, new);
+    return !ok;
+}
+
+// Opening/closing files
+
+char *tmpnam(char *s) {
+    static char internal_buffer[L_tmpnam];
+    char *buffer;
+    if(s != NULL) {
+        buffer = s;
+    }
+    else {
+        buffer = &internal_buffer[0];
+    }
+    UINT num = GetTempFileNameA(".", ".t_", 0, buffer);
+    if(num == 0) {
         return NULL;
     }
+    else {
+        return buffer;
+    }
+}
+
+FILE *tmpfile(void) {
+    char *file_name = malloc(L_tmpnam);
+    UINT num = GetTempFileNameA(".", ".t_", 0, &file_name[0]);
+    if(!num) {
+        return NULL;
+    }
+    FILE *tmp_file = fopen(&file_name[0], "wb+");
+    tmp_file->temp = true;
+    tmp_file->temp_name = file_name;
+    return tmp_file;
+}
+
+FILE *fopen(const char *restrict name, const char *restrict mode) {
+    WindowsMode win_mode;
+    DWORD flags = FILE_FLAG_WRITE_THROUGH;
+    FileMode io_mode;
+    FileType bt_mode;
+    if(!_mode_parse(mode, &io_mode, &bt_mode, &win_mode)) {
+        return NULL;
+    }
+    DWORD access = win_mode.access;
+    DWORD share = win_mode.share;
+    DWORD disp = win_mode.disp;
     HANDLE handle = CreateFileA(name, access, share, NULL, disp, flags, NULL);
     if(handle == INVALID_HANDLE_VALUE) {
         return NULL;
     }
-    FILE *stream = create_stream(handle, io_mode, bt_mode);
+    FILE *stream = _file_create(handle, io_mode, bt_mode);
     void *buffer_data = malloc(BUFSIZ);
-    stream->buffer = (stream_buffer_t) {1, _IOFBF, BUFSIZ, buffer_data};
+    stream->buffer = (FileBuffer) {1, _IOFBF, BUFSIZ, buffer_data};
     return stream;
 }
 
@@ -211,15 +263,16 @@ FILE *freopen(const char *restrict name, const char *restrict mode, FILE *restri
         return NULL;
     }
     fflush(stream);
-    DWORD access;
+    WindowsMode win_mode;
-    DWORD share;
-    DWORD disp;
     DWORD flags = FILE_FLAG_WRITE_THROUGH;
-    stream_io_mode_t io_mode;
+    FileMode io_mode;
-    stream_bt_mode_t bt_mode;
+    FileType bt_mode;
-    if(!win_parse_mode(mode, &io_mode, &bt_mode, &access, &share, &disp)) {
+    if(!_mode_parse(mode, &io_mode, &bt_mode, &win_mode)) {
         return NULL;
     }
+    DWORD access = win_mode.access;
+    DWORD share = win_mode.share;
+    DWORD disp = win_mode.disp;
     if(name == NULL) {
         HANDLE handle = ReOpenFile(stream->handle, access, share, flags);
         if(handle == INVALID_HANDLE_VALUE) {
@@ -232,15 +285,14 @@ FILE *freopen(const char *restrict name, const char *restrict mode, FILE *restri
         if(handle == INVALID_HANDLE_VALUE) {
             return NULL;
         }
-        init_stream(stream, handle, io_mode, bt_mode);
+        *stream = (FILE) {0};
+        stream->handle = handle;
+        stream->io_mode = io_mode;
+        stream->bt_mode = bt_mode;
     }
     return stream;
 }
 
-FILE *tmpfile(void) {
-    return NULL;
-}
-
 int fclose(FILE *stream) {
     if(fflush(stream) == EOF) {
         return EOF;
@@ -251,17 +303,63 @@ int fclose(FILE *stream) {
     if(!CloseHandle(stream->handle)) {
         return EOF;
     }
+    if(stream->temp) {
+        BOOL err = DeleteFileA(stream->temp_name);
+        free(stream->temp_name);
+        return err;
+    }
     return 0;
 }
 
-static void _close_io() {
+// Buffering
-    while(streams_to_close != NULL) {
+
-        FILE *stream = streams_to_close;
+int setvbuf(FILE *restrict stream, char *restrict ptr, int mode, size_t size) {
-        fflush(stream);
+    if(mode != _IOFBF && mode != _IOLBF && mode != _IONBF) {
-        delete_stream(stream);
+        return 1;
+    }
+    _file_lock(stream);
+    FileBuffer *buffer = &stream->buffer;
+    buffer->mode = mode;
+    if(ptr == NULL) {
+        buffer->data = realloc(buffer->data, size);
+        buffer->size = size;
+    }
+    else {
+        buffer->data = ptr;
+        buffer->size = size;
+    }
+    _file_unlock(stream);
+    return 0;
+}
+
+void setbuf(FILE *restrict stream, char *restrict buf) {
+    if(buf == NULL) {
+        setvbuf(stream, NULL, _IONBF, 0);
+    }
+    else {
+        setvbuf(stream, buf, _IOFBF, BUFSIZ);
     }
 }
 
+int fflush(FILE *stream) {
+    _file_lock(stream);
+    int res = 0;
+    FileBuffer *buffer = &stream->buffer;
+    void *data = buffer->data;
+    size_t size = buffer->written;
+    DWORD bytes_written;
+    BOOL ok = WriteFile(stream->handle, data, size, &bytes_written, NULL);
+    if(!ok) {
+        res = EOF;
+        stream->eof = 1;
+    }
+    buffer->written = 0;
+    _file_unlock(stream);
+    return res;
+}
+
+// Errors
+
 int feof(FILE *stream) {
     return stream->eof;
 }
@@ -276,57 +374,14 @@ void clearerr(FILE *stream) {
 }
 
 void perror(char const *s) {
-    printf("%s: %s\n", s, strerror(errno));
+    // printf("%s: %s\n", s, strerror(errno));
 }
 
-int setvbuf(FILE *restrict stream, char *restrict ptr, int mode, size_t size) {
+// File reads/writes
-    if(mode != _IOFBF && mode != _IOLBF && mode != _IONBF) {
-        return 1;
-    }
-    mtx_lock(&stream->lock);
-    stream_buffer_t *buffer = &stream->buffer;
-    buffer->mode = mode;
-    if(ptr == NULL) {
-        buffer->data = realloc(buffer->data, size);
-        buffer->size = size;
-    }
-    else {
-        buffer->data = ptr;
-        buffer->size = size;
-    }
-    mtx_unlock(&stream->lock);
-    return 0;
-}
-
-void setbuf(FILE *restrict stream, char *restrict buf) {
-    if(buf == NULL) {
-        setvbuf(stream, NULL, _IONBF, 0);
-    }
-    else {
-        setvbuf(stream, buf, _IOFBF, BUFSIZ);
-    }
-}
-
-int fflush(FILE *stream) {
-    mtx_lock(&stream->lock);
-    int res = 0;
-    stream_buffer_t *buffer = &stream->buffer;
-    void *data = buffer->data;
-    size_t size = buffer->written;
-    DWORD bytes_written;
-    BOOL ok = WriteFile(stream->handle, data, size, &bytes_written, NULL);
-    if(!ok) {
-        res = EOF;
-        stream->eof = 1;
-    }
-    buffer->written = 0;
-    mtx_unlock(&stream->lock);
-    return res;
-}
 
 int fputc(int c, FILE *stream) {
-    mtx_lock(&stream->lock);
+    _file_lock(stream);
-    stream_buffer_t *buffer = &stream->buffer;
+    FileBuffer *buffer = &stream->buffer;
     int res = c;
     if(buffer->mode == _IONBF) {
         unsigned char str[1] = {c};
@@ -335,7 +390,7 @@ int fputc(int c, FILE *stream) {
         if(!ok) {
             res = EOF;
             stream->err = 1;
-            goto cum;
+            goto end;
         }
 
     }
@@ -349,19 +404,19 @@ int fputc(int c, FILE *stream) {
         }
         if(needs_flush) {
             if(fflush(stream) == EOF) {
-                goto cum;
+                goto end;
             }
         }
     }
-cum:
+end:
-    mtx_unlock(&stream->lock);
+    _file_unlock(stream);
     return res;
 }
 
 int fgetc(FILE *stream) {
-    mtx_lock(&stream->lock);
+    _file_lock(stream);
     int res = 0;
-    stream_buffer_t *buffer = &stream->buffer;
+    FileBuffer *buffer = &stream->buffer;
     int read_from_disk = 1;
     if(buffer->mode != _IONBF) {
         unsigned char *data = buffer->data;
@@ -377,95 +432,47 @@ int fgetc(FILE *stream) {
         if(bytes_read != 1) {
             res = EOF;
             stream->eof = 1;
-            goto cum;
+            goto end;
         }
         if(!ok) {
             res = EOF;
-            goto cum;
+            goto end;
         }
         res = buf[0];
     }
-cum:
+end:
-    mtx_unlock(&stream->lock);
+    _file_unlock(stream);
     return res;
 }
 
 int ungetc(int c, FILE *stream) {
-    mtx_lock(&stream->lock);
+    _file_lock(stream);
     int res;
-    stream_buffer_t *buffer = &stream->buffer;
+    FileBuffer *buffer = &stream->buffer;
     if(buffer->mode == _IONBF) {
         res = EOF;
-        goto cum;
+        goto end;
     }
     else {
         if(c == EOF) {
             res = EOF;
-            goto cum;
+            goto end;
         }
         if(buffer->written == buffer->size) {
             res = EOF;
-            goto cum;
+            goto end;
         }
         unsigned char *data = buffer->data;
         data[buffer->written++] = (unsigned char)c;
         res = c;
     }
-cum:
+end:
-    mtx_unlock(&stream->lock);
+    _file_unlock(stream);
     return res;
 }
 
-int fgetpos(FILE *restrict stream, fpos_t *restrict pos) {
-    LONG pos_hi = 0;
-    DWORD pos_lo = SetFilePointer(stream->handle, 0, &pos_hi, FILE_CURRENT);
-    if(pos_lo == INVALID_SET_FILE_POINTER) {
-        return 1;
-    }
-    int64_t offset = ((int64_t)pos_hi << 32) | (int64_t)pos_lo;
-    pos->offset = offset;
-    pos->mbstate = stream->mbstate;
-    return 0;
-}
-
-int fseek(FILE *stream, long int offset, int whence) {
-    // Note(bumbread): the SEEK_SET, SEEK_CUR and SEEK_END are defined to match
-    // Windows' constants, so no conversion is requierd between them.
-    LONG pos_hi = 0;
-    DWORD pos_lo = SetFilePointer(stream->handle, offset, &pos_hi, whence);
-    if(pos_lo == INVALID_SET_FILE_POINTER) {
-        return -1L;
-    }
-    return 0;
-}
-
-int fsetpos(FILE *stream, const fpos_t *pos) {
-    LONG pos_hi = pos->offset >> 32;
-    LONG pos_lo = (LONG)(pos->offset & 0xffffffff);
-    DWORD status = SetFilePointer(stream->handle, pos_lo, &pos_hi, FILE_BEGIN);
-    if(status == INVALID_SET_FILE_POINTER) {
-        return 1;
-    }
-    stream->mbstate = pos->mbstate;
-    return 0;
-}
-
-long int ftell(FILE *stream) {
-    LONG pos_hi = 0;
-    DWORD pos_lo = SetFilePointer(stream->handle, 0, &pos_hi, FILE_CURRENT);
-    if(pos_lo == INVALID_SET_FILE_POINTER) {
-        return -1L;
-    }
-    int64_t offset = ((int64_t)pos_hi << 32) | (int64_t)pos_lo;
-    return offset;
-}
-
-void rewind(FILE *stream) {
-    fseek(stream, 0, SEEK_SET);
-}
-
 size_t fwrite(void const *restrict buffer, size_t size, size_t count, FILE *restrict stream) {
-    mtx_lock(&stream->lock);
+    _file_lock(stream);
     unsigned char const *bytes = (unsigned char const*)buffer;
     size_t num_written;
     for(num_written = 0; num_written < count; ++num_written) {
@@ -478,12 +485,12 @@ size_t fwrite(void const *restrict buffer, size_t size, size_t count, FILE *rest
         bytes += size;
     }
 end:
-    mtx_unlock(&stream->lock);
+    _file_unlock(stream);
     return num_written;
 }
 
 size_t fread(void *restrict buffer, size_t size, size_t count, FILE *restrict stream) {
-    mtx_lock(&stream->lock);
+    _file_lock(stream);
     unsigned char *bytes = (unsigned char *)buffer;
     size_t num_read;
     for(num_read = 0; num_read < count; ++num_read) {
@@ -497,7 +504,7 @@ size_t fread(void *restrict buffer, size_t size, size_t count, FILE *restrict st
         bytes += size;
     }
 end:
-    mtx_unlock(&stream->lock);
+    _file_unlock(stream);
     return num_read;
 }
 
@@ -517,7 +524,7 @@ char *fgets(char *restrict str, int count, FILE *restrict stream) {
         str[0] = 0;
         return str;
     }
-    mtx_lock(&stream->lock);
+    _file_lock(stream);
     int i;
     for(i = 0; i < count-1; ++i) {
         int c = fgetc(stream);
@@ -535,12 +542,12 @@ char *fgets(char *restrict str, int count, FILE *restrict stream) {
         }
     }
     str[i] = 0;
-    mtx_unlock(&stream->lock);
+    _file_unlock(stream);
     return str;
 }
 
 int fputs(char const *str, FILE *stream) {
-    mtx_lock(&stream->lock);
+    _file_lock(stream);
     int res = 0;
     while(*str) {
         int c = fputc(*str++, stream);
@@ -549,7 +556,7 @@ int fputs(char const *str, FILE *stream) {
             break;
         }
     }
-    mtx_unlock(&stream->lock);
+    _file_unlock(stream);
     return res;
 }
 
@@ -562,3 +569,55 @@ int puts(char const *str) {
 char *gets(char *str) {
     return fgets(str, 0x7fffffff, stdin);
 }
+
+// File positioning:
+
+int fgetpos(FILE *restrict stream, fpos_t *restrict pos) {
+    LONG pos_hi = 0;
+    DWORD pos_lo = SetFilePointer(stream->handle, 0, &pos_hi, FILE_CURRENT);
+    if(pos_lo == INVALID_SET_FILE_POINTER) {
+        return 1;
+    }
+    int64_t offset = ((int64_t)pos_hi << 32) | (int64_t)pos_lo;
+    pos->offset = offset;
+    pos->mbstate.leftover = stream->mbstate.leftover;
+    pos->mbstate.high_surrogate = stream->mbstate.high_surrogate;
+    return 0;
+}
+
+int fseek(FILE *stream, long int offset, int whence) {
+    // Note(bumbread): the SEEK_SET, SEEK_CUR and SEEK_END are defined to match
+    // the Windows constants, so no conversion is requierd between them.
+    LONG pos_hi = 0;
+    DWORD pos_lo = SetFilePointer(stream->handle, offset, &pos_hi, whence);
+    if(pos_lo == INVALID_SET_FILE_POINTER) {
+        return -1L;
+    }
+    return 0;
+}
+
+int fsetpos(FILE *stream, const fpos_t *pos) {
+    LONG pos_hi = pos->offset >> 32;
+    LONG pos_lo = (LONG)(pos->offset & 0xffffffff);
+    DWORD status = SetFilePointer(stream->handle, pos_lo, &pos_hi, FILE_BEGIN);
+    if(status == INVALID_SET_FILE_POINTER) {
+        return 1;
+    }
+    stream->mbstate.leftover = pos->mbstate.leftover;
+    stream->mbstate.high_surrogate = pos->mbstate.high_surrogate;
+    return 0;
+}
+
+long int ftell(FILE *stream) {
+    LONG pos_hi = 0;
+    DWORD pos_lo = SetFilePointer(stream->handle, 0, &pos_hi, FILE_CURRENT);
+    if(pos_lo == INVALID_SET_FILE_POINTER) {
+        return -1L;
+    }
+    int64_t offset = ((int64_t)pos_hi << 32) | (int64_t)pos_lo;
+    return offset;
+}
+
+void rewind(FILE *stream) {
+    fseek(stream, 0, SEEK_SET);
+}

src/os_win/win.h

@@ -10,5 +10,4 @@
 static void _setup_timer(void);
 static void _setup_eh();
 static void _setup_heap();
-static void _setup_io();
+static void _io_close();
-static void _close_io();

test/test_io.c

@@ -2,29 +2,10 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <assert.h>
-int main(void)
-{
-    // prepare a file holding 4 values of type char
-    enum {SIZE = 4};
-    FILE* fp = fopen("test.bin", "wb");
-    assert(fp);
-    fputc('a', fp);
-    fputc('b', fp);
-    fputc('d', fp);
-    fputc('c', fp);
-    fclose(fp);
 
-    // demo using fsetpos to return to the beginning of a file
+int main(void) {
-    fp = fopen("test.bin", "rb");
+    FILE *tmp = tmpfile();
-    fpos_t pos;
+    fputc('a', tmp);
-    int c = fgetc(fp);
+    fclose(tmp);
-    printf("First value in the file: %c\n", c);
-    fgetpos(fp, &pos);
-    c = fgetc(fp);
-    printf("Second value in the file: %c\n", c);
-    fsetpos(fp,&pos);
-    c = fgetc(fp);
-    printf("Second value in the file again: %c\n", c);
-    fclose(fp);
     return 0;
 }