add unfinished hmmlib rewrite "hmmlib2"
This commit is contained in:
parent
828fff7a7a
commit
67c4942b60
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@ -0,0 +1,5 @@
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# this is just for the test program (WON build should also work)
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# when the library is finished, it should be #include-able
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hmmlib: hmmlib.c
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gcc -g $< -o $@
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@ -0,0 +1,589 @@
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#if 0
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gcc -g "$0" -o "${0%%.c}"
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exit 0
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#endif
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#include "hmmlib.h"
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#include <setjmp.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <stdint.h>
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//
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// TODO:
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// parse quotes
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// marker parameter + episode number
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// track line numbers somehow
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// seems to be only needed for the error-func, so...
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// could probably do it after-the-fact, counting \n until we hit p->cursor
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// port over the hmml_dump function
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// test various files
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// cleanup
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//
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#define HSTX(x) x, sizeof(x)-1
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#define HSTR(x) (struct _hmml_str){ HSTX(x) }
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#ifndef MALLOC
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#define MALLOC malloc
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#endif
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#ifndef REALLOC
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#define REALLOC realloc
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#endif
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#ifndef countof
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#define countof(x) (sizeof(x)/sizeof(*x))
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#endif
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#define _hmml_debug(...)
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//#define _hmml_debug printf
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struct _hmml_parser {
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HMML_Output out;
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char* cursor;
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jmp_buf err_buf;
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intptr_t* free_list;
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};
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struct _hmml_str {
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char* ptr;
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size_t len;
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};
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// memory management boilerplate stuff
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static void* _hmml_store_ptr(struct _hmml_parser* p, void* input)
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{
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uintptr_t* ptr;
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if(p->free_list) {
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ptr = p->free_list;
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if(ptr[1] + 1 == ptr[0]) {
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size_t n = ptr[0] << 1;
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ptr = REALLOC(ptr, n * sizeof(uintptr_t));
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ptr[0] = n;
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}
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ptr[ptr[1]] = (intptr_t)input;
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ptr[1]++;
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} else {
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ptr = MALLOC(8 * sizeof(uintptr_t));
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ptr[0] = 8;
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ptr[1] = 3;
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ptr[2] = (intptr_t)input;
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}
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p->free_list = ptr;
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return input;
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}
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static char* _hmml_persist_str(struct _hmml_parser* p, const struct _hmml_str str)
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{
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char* mem = MALLOC(str.len+1);
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memcpy(mem, str.ptr, str.len);
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mem[str.len] = '\0';
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return _hmml_store_ptr(p, mem);
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}
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static void _hmml_persist_array_fn(struct _hmml_parser* p, void** out, size_t* out_count, void* in, size_t in_size)
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{
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void* base;
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if(!*out) {
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base = MALLOC(in_size + sizeof(size_t));
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_hmml_store_ptr(p, base);
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*(size_t*)base = p->free_list[1]-1;
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} else {
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base = (char*)(*out) - sizeof(size_t);
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base = REALLOC(base, (*out_count + 1) * in_size + sizeof(size_t));
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size_t free_list_off = *(size_t*)base;
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p->free_list[free_list_off] = (intptr_t)base;
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}
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*out = (char*)base + sizeof(size_t);
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memcpy((char*)*out + (*out_count * in_size), in, in_size);
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++(*out_count);
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}
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#define _hmml_persist_array(p, out, out_count, in) \
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_hmml_persist_array_fn((p), (void**)(out), (out_count), &(in), sizeof(in))
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// error handling
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#define _hmml_err(p, fmt, ...) \
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_hmml_err_fn((p), fmt "\n", ##__VA_ARGS__)
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__attribute__((noreturn))
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static void _hmml_err_fn(struct _hmml_parser* p, const char* fmt, ...)
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{
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static char error_buf[4096];
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va_list va;
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va_start(va, fmt);
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int n = vsnprintf(error_buf, sizeof(error_buf), fmt, va);
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va_end(va);
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// TODO: figure out / keep track of the line number
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p->out.error.message = _hmml_persist_str(p, (struct _hmml_str){ error_buf, n });
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longjmp(p->err_buf, 1);
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}
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// actual parsing stuff
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static void _hmml_skip_ws(struct _hmml_parser* p)
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{
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p->cursor += strspn(p->cursor, " \t\r\n");
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}
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static _Bool _hmml_str_eq(struct _hmml_str a, struct _hmml_str b)
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{
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return a.len == b.len && memcmp(a.ptr, b.ptr, a.len) == 0;
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}
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static _Bool _hmml_unesc(char in, char* out)
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{
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if(strchr("[]:@~\\\"", in)) {
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*out = in;
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return 1;
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} else {
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return 0;
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}
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}
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static char* _hmml_read_attr(struct _hmml_parser* p, char* mem, size_t mem_size)
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{
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char* src = p->cursor;
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char* dst = mem;
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if(*src == '"') {
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++src;
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while(*src && *src != '"' && src - p->cursor < mem_size) {
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char converted;
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if(*src == '\\' && _hmml_unesc(src[1], &converted)) {
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*dst++ = converted;
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src += 2;
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} else {
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*dst++ = *src++;
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}
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}
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if(*src != '"') {
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_hmml_err(p, "Partially quoted attribute");
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}
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*dst = '\0';
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p->cursor = src+1;
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} else {
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size_t n = strcspn(src, " ]\r\n\t");
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if(n >= mem_size) {
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_hmml_err(p, "Attribute [%.10s...] too long", p->cursor);
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}
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memcpy(dst, src, n);
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dst += n;
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*dst = '\0';
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p->cursor += n;
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}
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return dst;
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}
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static void _hmml_read_kv(struct _hmml_parser* p, struct _hmml_str* key, struct _hmml_str* val)
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{
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static char key_memory[64];
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static char val_memory[1024];
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size_t key_len = strcspn(p->cursor, " \r\n\t=");
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if(key_len >= sizeof(key_memory)) {
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_hmml_err(p, "Attribute key [%.10s...] too long", p->cursor);
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}
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memcpy(key_memory, p->cursor, key_len);
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key_memory[key_len] = '\0';
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p->cursor += key_len;
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_hmml_skip_ws(p);
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if(*p->cursor != '=') {
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_hmml_err(p, "Expected '=', got [%.3s]", p->cursor);
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}
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++p->cursor;
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char* src = p->cursor;
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char* dst = _hmml_read_attr(p, val_memory, sizeof(val_memory));
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_hmml_debug("read kv [%s] = [%s]\n", key_memory, val_memory);
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key->ptr = key_memory;
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key->len = key_len;
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val->ptr = val_memory;
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val->len = dst - val_memory;
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}
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static HMML_Marker _hmml_parse_marker(struct _hmml_parser* p)
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{
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static char marker_mem[4096];
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// the extended markers are inside [ ] and can contain parameters
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_Bool extended = *p->cursor == '[';
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if(extended) {
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++p->cursor;
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}
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HMML_Marker marker = {};
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char c = *p->cursor;
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if(c == '~') {
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marker.type = HMML_PROJECT;
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} else if(c == '@') {
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marker.type = HMML_MEMBER;
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} else if(c == ':') {
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marker.type = HMML_CATEGORY;
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} else {
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_hmml_err(p, "Unknown marker type");
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}
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++p->cursor;
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char* end = _hmml_read_attr(p, marker_mem, sizeof(marker_mem));
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marker.marker = _hmml_persist_str(p, (struct _hmml_str){ marker_mem, end - marker_mem });
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_hmml_skip_ws(p);
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if(*p->cursor == '#') {
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// TODO: marker.episode = smth
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} else {
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// TODO: marker.parameter = _hmml_persist_str(p, (struct _hmml_str){ });
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}
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if(extended) {
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if(*p->cursor != ']') {
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_hmml_err(p, "Expected ']'");
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}
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++p->cursor;
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}
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return marker;
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}
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static HMML_Reference _hmml_parse_ref(struct _hmml_parser* p)
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{
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HMML_Reference ref = {};
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struct str_attr {
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struct _hmml_str str;
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char** dest;
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} str_attrs[] = {
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{ HSTR("site") , &ref.site },
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{ HSTR("page") , &ref.page },
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{ HSTR("url") , &ref.url },
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{ HSTR("title") , &ref.title },
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{ HSTR("article") , &ref.article },
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{ HSTR("author") , &ref.author },
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{ HSTR("editor") , &ref.editor },
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{ HSTR("publisher"), &ref.publisher },
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{ HSTR("isbn") , &ref.isbn },
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};
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for(;;) {
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next_attr:
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_hmml_skip_ws(p);
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if(*p->cursor == ']') {
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++p->cursor;
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break;
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}
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struct _hmml_str key, value;
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_hmml_read_kv(p, &key, &value);
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for(int i = 0; i < countof(str_attrs); ++i) {
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struct str_attr* s = str_attrs + i;
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if(_hmml_str_eq(key, s->str)) {
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*s->dest = _hmml_persist_str(p, value);
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goto next_attr;
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}
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}
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_hmml_err(p, "Unknown reference attribute");
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}
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return ref;
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}
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static void _hmml_parse_timecode(struct _hmml_parser* p, HMML_Annotation* anno)
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{
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int h = 0, m = 0, s = 0, offset = 0;
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int count = sscanf(p->cursor, "[%u:%u%n", &m, &s, &offset);
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if(count < 2) {
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_hmml_err(p, "Unable to parse timecode");
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}
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p->cursor += offset;
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char c = *p->cursor;
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if(c == ':') {
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int tmp;
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offset = 0;
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if(sscanf(p->cursor, ":%u]%n", &tmp, &offset) != 1 || offset == 0) {
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_hmml_err(p, "Unable to parse 3-part timecode");
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}
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h = m;
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m = s;
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s = tmp;
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p->cursor += offset;
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} else if(c != ']') {
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_hmml_err(p, "Unable to parse timecode");
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} else {
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++p->cursor;
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}
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if(s >= 60) {
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_hmml_err(p, "Seconds cannot exceed 59");
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}
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if(m >= 60) {
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_hmml_err(p, "Minutes cannot exceed 59");
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}
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anno->h = h;
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anno->m = m;
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anno->s = s;
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}
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static void _hmml_parse_text(struct _hmml_parser* p, HMML_Annotation* anno)
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{
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static char text_mem[4096];
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char* out = text_mem;
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memset(text_mem, 0, sizeof(text_mem));
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for(;;) {
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size_t n = strcspn(p->cursor, "\\[]:@~");
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char c = p->cursor[n];
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if(out + n > text_mem + sizeof(text_mem)) {
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_hmml_err(p, "Not enough text memory");
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}
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memcpy(out, p->cursor, n);
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p->cursor += n;
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out += n;
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if(c == '\0') {
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_hmml_err(p, "Unexpected EOF");
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}
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else if(c == ']') {
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++p->cursor;
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break;
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}
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else if(c == '\\') {
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*out++ = p->cursor[1];
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p->cursor += 2;
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}
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else if(c == '[') {
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if(strncmp(p->cursor + 1, "ref", 3) == 0) {
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p->cursor += 4;
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HMML_Reference ref = _hmml_parse_ref(p);
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_hmml_persist_array(p, &anno->references, &anno->reference_count, ref);
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} else {
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HMML_Marker m = _hmml_parse_marker(p);
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_hmml_persist_array(p, &anno->markers, &anno->marker_count, m);
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}
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}
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else {
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// it is a @ ~ or : marker without parameters
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HMML_Marker m = _hmml_parse_marker(p);
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_hmml_persist_array(p, &anno->markers, &anno->marker_count, m);
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}
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if(out - text_mem >= sizeof(text_mem)) {
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_hmml_err(p, "Not enough text memory");
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}
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}
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anno->text = _hmml_persist_str(p, (struct _hmml_str){ text_mem, out - text_mem });
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}
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static void _hmml_parse_annotations(struct _hmml_parser* p)
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{
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for(;;) {
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_hmml_skip_ws(p);
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if(*p->cursor == '\0') {
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_hmml_err(p, "Unexpected EOF");
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}
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if(strncmp(p->cursor, "[/video]", 8) == 0) {
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break;
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}
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HMML_Annotation anno = {};
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_hmml_parse_timecode(p, &anno);
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if(*p->cursor != '[') {
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_hmml_err(p, "Expected '['");
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}
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if(p->cursor[1] == '@') {
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HMML_Marker m = _hmml_parse_marker(p);
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anno.author = m.marker;
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}
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++p->cursor;
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_hmml_parse_text(p, &anno);
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if(p->cursor[0] == '[' && p->cursor[1] == ':') {
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HMML_Marker m = _hmml_parse_marker(p);
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_hmml_persist_array(p, &anno.markers, &anno.marker_count, m);
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}
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if(p->cursor[0] == '[' && p->cursor[1] == 'q') {
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//_hmml_parse_quote();
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}
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_hmml_persist_array(p, &p->out.annotations, &p->out.annotation_count, anno);
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}
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}
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static void _hmml_parse_video(struct _hmml_parser* p)
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{
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struct str_attr {
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struct _hmml_str str;
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char** dest;
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} str_attrs[] = {
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{ HSTR("member") , &p->out.metadata.member },
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{ HSTR("stream_platform"), &p->out.metadata.stream_platform },
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{ HSTR("stream_username"), &p->out.metadata.stream_username },
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{ HSTR("project") , &p->out.metadata.project },
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{ HSTR("title") , &p->out.metadata.title },
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{ HSTR("vod_platform") , &p->out.metadata.vod_platform },
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{ HSTR("id") , &p->out.metadata.id },
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{ HSTR("template") , &p->out.metadata.template },
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{ HSTR("medium") , &p->out.metadata.medium },
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{ HSTR("output") , &p->out.metadata.output },
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};
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for(;;) {
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next_attr:
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_hmml_skip_ws(p);
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if(*p->cursor == ']') {
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++p->cursor;
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return _hmml_parse_annotations(p);
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}
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struct _hmml_str key, value;
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_hmml_read_kv(p, &key, &value);
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for(int i = 0; i < countof(str_attrs); ++i) {
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struct str_attr* s = str_attrs + i;
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if(_hmml_str_eq(key, s->str)) {
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*s->dest = _hmml_persist_str(p, value);
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goto next_attr;
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}
|
||||
}
|
||||
|
||||
if(_hmml_str_eq(key, HSTR("credit"))) {
|
||||
HMML_Credit credit = {};
|
||||
|
||||
char* colon = strchr(value.ptr, ':');
|
||||
if(colon) {
|
||||
*colon = '\0';
|
||||
credit.name = _hmml_persist_str(p, (struct _hmml_str){ value.ptr, colon - value.ptr });
|
||||
credit.role = _hmml_persist_str(p, (struct _hmml_str){ colon+1, value.len - ((colon+1) - value.ptr) });
|
||||
} else {
|
||||
credit.name = _hmml_persist_str(p, value);
|
||||
}
|
||||
|
||||
_hmml_persist_array(p, &p->out.metadata.credits, &p->out.metadata.credit_count, credit);
|
||||
|
||||
goto next_attr;
|
||||
}
|
||||
|
||||
HMML_VideoCustomMetaData custom = {
|
||||
.key = _hmml_persist_str(p, key),
|
||||
.value = _hmml_persist_str(p, value),
|
||||
};
|
||||
|
||||
_hmml_persist_array(p, &p->out.metadata.custom, &p->out.metadata.custom_count, custom);
|
||||
}
|
||||
}
|
||||
|
||||
HMML_Output hmml_parse(char* mem)
|
||||
{
|
||||
struct _hmml_parser p = {};
|
||||
p.cursor = mem;
|
||||
|
||||
if(setjmp(p.err_buf) == 1) {
|
||||
// if it returns 1, an error happened
|
||||
return p.out;
|
||||
}
|
||||
|
||||
static const struct _hmml_str prefix = HSTR("[video");
|
||||
if(strncasecmp(p.cursor, prefix.ptr, prefix.len)) {
|
||||
_hmml_err(&p, "Missing initial video tag.");
|
||||
} else {
|
||||
p.cursor += prefix.len;
|
||||
_hmml_parse_video(&p);
|
||||
}
|
||||
|
||||
p.out.free_list = p.free_list;
|
||||
p.out.well_formed = 1;
|
||||
return p.out;
|
||||
}
|
||||
|
||||
void hmml_free(HMML_Output* out)
|
||||
{
|
||||
if(!out->free_list) {
|
||||
return;
|
||||
}
|
||||
|
||||
for(int i = 2; i < ((uintptr_t*)out->free_list)[1]; ++i) {
|
||||
free(((void**)out->free_list)[i]);
|
||||
}
|
||||
|
||||
free(out->free_list);
|
||||
}
|
||||
|
||||
// for testing, should be removed or #if 0'd for the library
|
||||
int main(int argc, char** argv)
|
||||
{
|
||||
if(argc < 2) {
|
||||
fprintf(stderr, "Usage: %s [file]\n", argv[0]);
|
||||
return 1;
|
||||
}
|
||||
|
||||
FILE* f = fopen(argv[1], "r");
|
||||
if(!f) {
|
||||
perror(argv[1]);
|
||||
return 1;
|
||||
}
|
||||
|
||||
fseek(f, 0, SEEK_END);
|
||||
long size = ftell(f);
|
||||
rewind(f);
|
||||
|
||||
char* mem = malloc(size+1);
|
||||
mem[size] = 0;
|
||||
|
||||
fread(mem, 1, size, f);
|
||||
fclose(f);
|
||||
|
||||
HMML_Output out = hmml_parse(mem);
|
||||
free(mem);
|
||||
|
||||
// to look at "out" in gdb
|
||||
asm("int3");
|
||||
|
||||
hmml_free(&out);
|
||||
}
|
||||
|
|
@ -0,0 +1,114 @@
|
|||
#ifndef HMML_H_
|
||||
#define HMML_H_
|
||||
#include <stddef.h>
|
||||
#include <stdio.h>
|
||||
|
||||
// Data structures
|
||||
|
||||
typedef struct {
|
||||
char* name;
|
||||
char* role;
|
||||
} HMML_Credit;
|
||||
|
||||
typedef struct {
|
||||
char* key;
|
||||
char* value;
|
||||
} HMML_VideoCustomMetaData;
|
||||
|
||||
typedef struct {
|
||||
char* member;
|
||||
char* stream_platform;
|
||||
char* stream_username;
|
||||
char* project;
|
||||
char* title;
|
||||
char* vod_platform;
|
||||
char* id;
|
||||
char* output;
|
||||
char* template;
|
||||
char* medium;
|
||||
|
||||
HMML_Credit* credits;
|
||||
size_t credit_count;
|
||||
|
||||
HMML_VideoCustomMetaData* custom;
|
||||
size_t custom_count;
|
||||
|
||||
} HMML_VideoMetaData;
|
||||
|
||||
typedef struct {
|
||||
char* site;
|
||||
char* page;
|
||||
char* url;
|
||||
char* title;
|
||||
char* article;
|
||||
char* author;
|
||||
char* editor;
|
||||
char* publisher;
|
||||
char* isbn;
|
||||
} HMML_Reference;
|
||||
|
||||
typedef enum {
|
||||
HMML_CATEGORY,
|
||||
HMML_MEMBER,
|
||||
HMML_PROJECT,
|
||||
|
||||
HMML_MARKER_COUNT,
|
||||
} HMML_MarkerType;
|
||||
|
||||
typedef struct {
|
||||
HMML_MarkerType type;
|
||||
char* marker;
|
||||
char* parameter;
|
||||
char* episode;
|
||||
} HMML_Marker;
|
||||
|
||||
typedef struct {
|
||||
int id;
|
||||
char* author;
|
||||
} HMML_Quote;
|
||||
|
||||
typedef struct {
|
||||
int line;
|
||||
|
||||
int h, m, s;
|
||||
|
||||
char* text;
|
||||
char* author;
|
||||
|
||||
HMML_Reference* references;
|
||||
size_t reference_count;
|
||||
|
||||
HMML_Marker* markers;
|
||||
size_t marker_count;
|
||||
|
||||
HMML_Quote quote;
|
||||
_Bool has_quote;
|
||||
} HMML_Annotation;
|
||||
|
||||
typedef struct {
|
||||
int line;
|
||||
char* message;
|
||||
} HMML_Error;
|
||||
|
||||
typedef struct {
|
||||
_Bool well_formed;
|
||||
HMML_VideoMetaData metadata;
|
||||
HMML_Annotation* annotations;
|
||||
size_t annotation_count;
|
||||
HMML_Error error;
|
||||
void* free_list;
|
||||
} HMML_Output;
|
||||
|
||||
// Functions
|
||||
|
||||
HMML_Output hmml_parse_file (FILE* file);
|
||||
void hmml_dump (HMML_Output* output);
|
||||
void hmml_free (HMML_Output* output);
|
||||
|
||||
// Version
|
||||
|
||||
extern const struct HMML_Version {
|
||||
int Major, Minor, Patch;
|
||||
} hmml_version;
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,25 @@
|
|||
[video member=nothings stream_platform=twitch stream_username=nothings2 project=obbg title="Open Block Building Game Development #32 (1/2)" vod_platform=youtube id=Vm-0ZUVMHHc annotator=Miblo]
|
||||
[2:01][Recap and update the TODO list]
|
||||
[10:08][Consult the example YouTube description file and the longest .hmml file]
|
||||
[38:58][Continue implementing parse_tag()][:parsing]
|
||||
[41:40][@miblo][Ohhh, right. Yeah, the \[video\] and \[/video\] tags are the only ones that have that open-close format. All the other tags are "single" tags]
|
||||
[41:51][Continue writing parse_tag() anyway][:parsing]
|
||||
[43:10][@miblo][@nothings2: There isn't really, other than the rambling in: [ref
|
||||
site="GitLab: Annotation-Pushers / Annotation-System / Issues"
|
||||
page="Handmade Annotation Markup Language (previously MibloMarkup)"
|
||||
url=http://git.handmadedev.org/Annotation-Pushers/Annotation-System/issues/2]]
|
||||
[45:17][Enable parse_tag() to tokenise the \[video\] node][:parsing]
|
||||
[1:51:32][Parse out the embedded \: and \@ tags][:parsing]
|
||||
[1:57:50][:Run it to see if those two cases work and tweak the username conversion]
|
||||
[3:15:14][@experior][Add a space after the pound? Or another character]
|
||||
[3:16:40][Delete the \@ in the text node][:parsing]
|
||||
[3:42:11][@miblo][@nothings2: That's fine, yeah! They are also in: [ref
|
||||
site="GitLab: Annotation-Pushers / Annotation-Game"
|
||||
page="projects/nothings/obbg"
|
||||
url=http://git.handmadedev.org/Annotation-Pushers/Annotation-Game/tree/master/projects/nothings/obbg]]
|
||||
[3:47:14][@insofaras][[ref
|
||||
site="GitHub: nothings/obbg"
|
||||
page="Pull Request #8: get it building and running on linux by insofaras"
|
||||
url=https://github.com/nothings/obbg/pull/8/files#diff-90c561ba68b3be193f3378639ef489a0R1831]]
|
||||
[3:50:44][Take a break]
|
||||
[/video]
|
||||
Loading…
Reference in New Issue