54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
// ini_parser.c - minimal [section] key=value parser
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// Used by the bootloader to read boot.ini and drivers/drivers.ini.
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// No heap; caller provides fixed-size output buffers.
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#include <string.h>
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#include <ini_parser.h>
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static inline int IsWs(char c) { return c == ' ' || c == '\t' || c == '\r'; }
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static char* TrimLeft(char* s) {
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while (*s && IsWs(*s)) s++;
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return s;
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}
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static void TrimRight(char* s) {
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char* e = s + strlen(s);
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while (e > s && IsWs(*(e-1))) *--e = '\0';
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}
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// Parse 'buf' (null-terminated) for [section] / key=value.
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// Calls cb(section, key, value, userdata) for each key found.
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void IniParse(char* buf, IniCallback cb, void* userdata) {
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char section[64] = "";
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char* line = buf;
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while (*line) {
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char* end = line;
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while (*end && *end != '\n') end++;
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char saved = *end;
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*end = '\0';
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char* p = TrimLeft(line);
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if (*p == '[') {
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p++;
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char* close = strchr(p, ']');
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if (close) { *close = '\0'; strncpy(section, p, 63); section[63] = '\0'; }
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} else if (*p && *p != ';' && *p != '#') {
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char* eq = strchr(p, '=');
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if (eq) {
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*eq = '\0';
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char* key = p; TrimRight(key);
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char* val = TrimLeft(eq + 1); TrimRight(val);
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cb(section, key, val, userdata);
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} else {
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// Key with no value (e.g., a driver filename in drivers.ini).
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TrimRight(p);
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if (*p) cb(section, p, "", userdata);
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}
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}
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*end = saved;
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line = end + (*end ? 1 : 0);
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}
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}
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