Function append_json_str_array

src/pipeline/pass_definitions.c:203–244

Append a JSON array of strings: ,"key":["a","b","c"]. Atomic like * append_json_string: emitted only if the whole array fits. */

/* Append a JSON array of strings: ,"key":["a","b","c"]. Atomic like
 * append_json_string: emitted only if the whole array fits. */
static void append_json_str_array(char *buf, size_t bufsize, size_t *pos, const char *key,
                                  const char **arr) {
    if (!arr || !arr[0] || *pos >= bufsize - PD_JSON_MARGIN) {
        return;
    }
    /* ,"key":[ + per item "<escaped>" + separating commas + ] */
    size_t required = strlen(key) + PD_JSON_FIELD_OVERHEAD;
    for (int i = 0; arr[i]; i++) {
        required += def_json_escaped_len(arr[i]) + PD_ESC_SPACE + (i > 0 ? SKIP_ONE : 0);
    }
    if (*pos + required + PD_ESC_SPACE > bufsize) {
        return; /* whole array would not fit — skip it atomically */
    }
    size_t p = *pos;
    int n = snprintf(buf + p, bufsize - p, ",\"%s\":[", key);
    if (n <= 0 || p + (size_t)n >= bufsize - PD_ESC_SPACE) {
        return;
    }
    p += (size_t)n;
    for (int i = 0; arr[i]; i++) {
        if (i > 0 && p < bufsize - SKIP_ONE) {
            buf[p++] = ',';
        }
        if (p < bufsize - SKIP_ONE) {
            buf[p++] = '"';
        }
        /* Full escaping (not just quote/backslash): items like C param types
         * sliced from multi-line declarations carry raw \n/\t bytes, which are
         * invalid inside JSON strings. */
        for (const char *s = arr[i]; *s && p < bufsize - PD_ESC_SPACE; s++) {
            p += (size_t)def_json_escape_char(buf + p, bufsize - p - PD_ESC_SPACE, *s);
        }
        if (p < bufsize - SKIP_ONE) {
            buf[p++] = '"';
        }
    }
    if (p < bufsize - SKIP_ONE) {
        buf[p++] = ']';
    }
    buf[p] = '\0';
    *pos = p;
}

/* Build properties JSON for a definition node. */
static void build_def_props(char *buf, size_t bufsize, const CBMDefinition *def) {