Function cbm_upsert_codex_mcp

src/cli/cli.c:1465–1530

#define CODEX_CMM_SECTION "[mcp_servers.codebase-memory-mcp]"

int cbm_upsert_codex_mcp(const char *binary_path, const char *config_path) {
    if (!binary_path || !config_path) {
        return CLI_ERR;
    }

    size_t len = 0;
    char *content = read_file_str(config_path, &len);

    /* Build our TOML section */
    char section[CLI_BUF_1K];
    snprintf(section, sizeof(section), "%s\ncommand = \"%s\"\n", CODEX_CMM_SECTION, binary_path);

    if (!content) {
        /* No file — create fresh */
        return write_file_str(config_path, section);
    }

    /* Check if our section already exists */
    char *existing = strstr(content, CODEX_CMM_SECTION);
    if (existing) {
        /* Remove old section: from [mcp_servers.codebase-memory-mcp] to next [section] or EOF */
        char *section_end = existing + strlen(CODEX_CMM_SECTION);
        /* Find next [section] header */
        char *next_section = strstr(section_end, "\n[");
        if (next_section) {
            next_section++; /* keep the newline before next section */
        }

        size_t prefix_len = (size_t)(existing - content);
        const char *suffix = next_section ? next_section : "";
        size_t suffix_len = strlen(suffix);
        size_t new_len = prefix_len + strlen(section) + CLI_SKIP_ONE + suffix_len;
        char *result = malloc(new_len + CLI_SKIP_ONE);
        if (!result) {
            free(content);
            return CLI_ERR;
        }
        memcpy(result, content, prefix_len);
        memcpy(result + prefix_len, section, strlen(section));
        result[prefix_len + strlen(section)] = '\n';
        memcpy(result + prefix_len + strlen(section) + CLI_SKIP_ONE, suffix, suffix_len);
        result[new_len] = '\0';

        int rc = write_file_str(config_path, result);
        free(content);
        free(result);
        return rc;
    }

    /* Append our section */
    size_t new_len = len + CLI_SKIP_ONE + strlen(section);
    char *result = malloc(new_len + CLI_SKIP_ONE);
    if (!result) {
        free(content);
        return CLI_ERR;
    }
    memcpy(result, content, len);
    result[len] = '\n';