linux c ini

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

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

void write_ini(const char *filename, IniEntry *entries, int count) {
    FILE *file = fopen(filename, "w");
    if (!file) {
        perror("Failed to open file for writing");
        return;
    }

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

    fclose(file);
}

void read_ini(const char *filename, IniEntry *entries, int count) {
    FILE *file = fopen(filename, "r");
    if (!file) {
        perror("Failed to open file for reading");
        return;
    }

    char line[256];
    char current_section[256] = "";
    while (fgets(line, sizeof(line), file)) {
        // Remove newline character
        line[strcspn(line, "\n")] = 0;

        if (line[0] == '[' && line[strlen(line) - 1] == ']') {
            strcpy(current_section, line + 1);
            current_section[strlen(current_section) - 1] = '\0';
        } else if (strchr(line, '=')) {
            char *key = strtok(line, "=");
            char *value = strtok(NULL, "=");
            for (int i = 0; i < count; i++) {
                if (strcmp(entries[i].section, current_section) == 0 &&
                    strcmp(entries[i].key, key) == 0) {
                    strcpy(entries[i].value, value);
                    break;
                }
            }
        }
    }

    fclose(file);
}

int main() {
    IniEntry config[] = {
        {"Settings", "Resolution", ""},
        {"Settings", "Volume", ""}
    };

    write_ini("config.ini", config, 2);

    read_ini("config.ini", config, 2);

    printf("Resolution: %s\n", config[0].value);
    printf("Volume: %s\n", config[1].value);

    return 0;
}