Function ap_cfg_getline_core

server/util.c:1079–1172

Read one line from open ap_configfile_t, strip LF, increase line number */ If custom handler does not define a getstr() function, read char by char */

/* Read one line from open ap_configfile_t, strip LF, increase line number */
/* If custom handler does not define a getstr() function, read char by char */
static apr_status_t ap_cfg_getline_core(char *buf, apr_size_t bufsize,
                                        apr_size_t offset, ap_configfile_t *cfp)
{
    apr_status_t rc;
    /* If a "get string" function is defined, use it */
    if (cfp->getstr != NULL) {
        char *cp;
        char *cbuf = buf + offset;
        apr_size_t cbufsize = bufsize - offset;

        while (1) {
            ++cfp->line_number;
            rc = cfp->getstr(cbuf, cbufsize, cfp->param);
            if (rc == APR_EOF) {
                if (cbuf != buf + offset) {
                    *cbuf = '\0';
                    break;
                }
                else {
                    return APR_EOF;
                }
            }
            if (rc != APR_SUCCESS) {
                return rc;
            }

            /*
             *  check for line continuation,
             *  i.e. match [^\\]\\[\r]\n only
             */
            cp = cbuf;
            cp += strlen(cp);
            if (cp > buf && cp[-1] == LF) {
                cp--;
                if (cp > buf && cp[-1] == CR)
                    cp--;
                if (cp > buf && cp[-1] == '\\') {
                    cp--;
                    /*
                     * line continuation requested -
                     * then remove backslash and continue
                     */
                    cbufsize -= (cp-cbuf);
                    cbuf = cp;
                    continue;
                }
            }
            else if (cp - buf >= bufsize - 1) {
                return APR_ENOSPC;
            }
            break;
        }
    } else {
        /* No "get string" function defined; read character by character */
        apr_size_t i = offset;

        if (bufsize < 2) {
            /* too small, assume caller is crazy */