mirror of https://gitlab.com/nakst/essence
66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
bool EsINIParse(EsINIState *s) {
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#define INI_READ(destination, counter, c1, c2) \
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s->destination = s->buffer, s->counter = 0; \
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while (s->bytes && *s->buffer != c1 && *s->buffer != c2) s->counter++, s->buffer++, s->bytes--; \
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if (s->bytes && *s->buffer == c1) s->buffer++, s->bytes--;
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while (s->bytes) {
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char c = *s->buffer;
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if (c == ' ' || c == '\n' || c == '\r') {
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s->buffer++, s->bytes--;
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continue;
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} else if (c == ';') {
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s->valueBytes = 0;
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INI_READ(key, keyBytes, '\n', 0);
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} else if (c == '[') {
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s->keyBytes = s->valueBytes = 0;
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s->buffer++, s->bytes--;
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INI_READ(section, sectionBytes, ']', 0);
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} else {
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INI_READ(key, keyBytes, '=', '\n');
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INI_READ(value, valueBytes, '\n', 0);
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}
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return true;
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}
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return false;
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}
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bool EsINIPeek(EsINIState *s) {
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char *oldBuffer = s->buffer;
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size_t oldBytes = s->bytes;
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bool result = EsINIParse(s);
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s->buffer = oldBuffer;
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s->bytes = oldBytes;
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return result;
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}
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size_t EsINIFormat(EsINIState *s, char *buffer, size_t bytes) {
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#define INI_WRITE(x, b) for (uintptr_t i = 0; i < b; i++) if (bytes) *buffer = x[i], buffer++, bytes--
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char *start = buffer;
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if (s->keyBytes || s->valueBytes) {
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if (s->key[0] == '[') return 0;
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INI_WRITE(s->key, s->keyBytes);
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if (s->key[0] != ';') INI_WRITE("=", 1);
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INI_WRITE(s->value, s->valueBytes);
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INI_WRITE("\n", 1);
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} else {
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INI_WRITE("\n[", 2);
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INI_WRITE(s->section, s->sectionBytes);
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INI_WRITE("]\n", 2);
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}
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return buffer - start;
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}
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void EsINIZeroTerminate(EsINIState *s) {
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static char emptyString = 0;
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if (s->sectionBytes) s->section[s->sectionBytes] = 0; else s->section = &emptyString;
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if (s->keyBytes) s->key[s->keyBytes] = 0; else s->key = &emptyString;
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if (s->valueBytes) s->value[s->valueBytes] = 0; else s->value = &emptyString;
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}
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