Function ws_grant_walk

src/foundation/workspace.c:350–382

Walk the grant file, invoking visit for each entry. visit returns true to stop. * Returns the number of entries seen. */

/* Walk the grant file, invoking visit for each entry. visit returns true to stop.
 * Returns the number of entries seen. */
static int ws_grant_walk(const char *cache_dir,
                         bool (*visit)(const char *root, bool sensitive, void *ctx), void *ctx) {
    char store[WS_LINE_MAX];
    if (!cbm_workspace_grant_path(cache_dir, store, sizeof(store))) {
        return 0;
    }
    FILE *f = cbm_fopen(store, "r");
    if (!f) {
        return 0;
    }
    char line[WS_LINE_MAX];
    int seen = 0;
    while (fgets(line, (int)sizeof(line), f)) {
        size_t len = strlen(line);
        while (len > 0 && (line[len - 1] == '\n' || line[len - 1] == '\r')) {
            line[--len] = '\0';
        }
        if (len == 0 || line[0] == '#') {
            continue;
        }
        bool sensitive = line[0] == WS_SENSITIVE_MARK;
        const char *root = sensitive ? line + 1 : line;
        if (!root[0]) {
            continue;
        }
        seen++;
        if (visit && visit(root, sensitive, ctx)) {
            break;
        }
    }
    (void)fclose(f);
    return seen;
}

typedef struct {
    const char *candidate;