c linux读取ini文件

[Section1]
key1=value1
key2=value2

[Section2]
keyA=valueA

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

typedef struct {
    char *section;
    char *key;
    char *value;
} IniEntry;

IniEntry* read_ini(const char *filename, int *entry_count) {
    FILE *file = fopen(filename, "r");
    if (!file) {
        perror("Failed to open file");
        return NULL;
    }

    IniEntry *entries = malloc(100 * sizeof(IniEntry)); // 假设最多100个条目
    *entry_count = 0;
    char line[256];
    char current_section[64] = "";

    while (fgets(line, sizeof(line), file)) {
        // 去除行尾换行符
        line[strcspn(line, "\n")] = 0;

        // 忽略注释和空行
        if (line[0] == ';' || line[0] == '\0') continue;

        if (line[0] == '[' && line[strlen(line) - 1] == ']') {
            strcpy(current_section, line + 1);
            current_section[strlen(current_section) - 1] = '\0';
        } else {
            char *equal = strchr(line, '=');
            if (equal) {
                *equal = '\0';
                entries[*entry_count].section = strdup(current_section);
                entries[*entry_count].key = strdup(line);
                entries[*entry_count].value = strdup(equal + 1);
                (*entry_count)++;
            }
        }
    }

    fclose(file);
    return entries;
}

int main() {
    int count;
    IniEntry *entries = read_ini("config.ini", &count);

    for (int i = 0; i < count; i++) {
        printf("[%s] %s = %s\n", entries[i].section, entries[i].key, entries[i].value);
        free(entries[i].section);
        free(entries[i].key);
        free(entries[i].value);
    }
    free(entries);

    return 0;
}