Function gplotRead

deps/leptonica/src/gplot.c:826–901

-----------------------------------------------------------------* * Serialize for I/O * *-----------------------------------------------------------------*/ ! * \brief gplotRead() * * \param[in] filename * \return gplot, or NULL on error */

 * \return  gplot, or NULL on error
 */
GPLOT *
gplotRead(const char  *filename)
{
char     buf[L_BUFSIZE];
char    *rootname, *title, *xlabel, *ylabel, *ignores;
l_int32  outformat, ret, version, ignore;
FILE    *fp;
GPLOT   *gplot;

    PROCNAME("gplotRead");

    if (!filename)
        return (GPLOT *)ERROR_PTR("filename not defined", procName, NULL);

    if ((fp = fopenReadStream(filename)) == NULL)
        return (GPLOT *)ERROR_PTR("stream not opened", procName, NULL);

    ret = fscanf(fp, "Gplot Version %d\n", &version);
    if (ret != 1) {
        fclose(fp);
        return (GPLOT *)ERROR_PTR("not a gplot file", procName, NULL);
    }
    if (version != GPLOT_VERSION_NUMBER) {
        fclose(fp);
        return (GPLOT *)ERROR_PTR("invalid gplot version", procName, NULL);
    }

    ignore = fscanf(fp, "Rootname: %511s\n", buf);  /* L_BUFSIZE - 1 */
    rootname = stringNew(buf);
    ignore = fscanf(fp, "Output format: %d\n", &outformat);
    ignores = fgets(buf, L_BUFSIZE, fp);   /* Title: ... */
    title = stringNew(buf + 7);
    title[strlen(title) - 1] = '\0';
    ignores = fgets(buf, L_BUFSIZE, fp);   /* X axis label: ... */
    xlabel = stringNew(buf + 14);
    xlabel[strlen(xlabel) - 1] = '\0';
    ignores = fgets(buf, L_BUFSIZE, fp);   /* Y axis label: ... */
    ylabel = stringNew(buf + 14);
    ylabel[strlen(ylabel) - 1] = '\0';

    gplot = gplotCreate(rootname, outformat, title, xlabel, ylabel);
    LEPT_FREE(rootname);
    LEPT_FREE(title);
    LEPT_FREE(xlabel);
    LEPT_FREE(ylabel);
    if (!gplot) {
        fclose(fp);
        return (GPLOT *)ERROR_PTR("gplot not made", procName, NULL);
    }
    sarrayDestroy(&gplot->cmddata);
    sarrayDestroy(&gplot->datanames);
    sarrayDestroy(&gplot->plotdata);
    sarrayDestroy(&gplot->plottitles);
    numaDestroy(&gplot->plotstyles);

    ignore = fscanf(fp, "Commandfile name: %511s\n", buf);  /* L_BUFSIZE - 1 */
    stringReplace(&gplot->cmdname, buf);
    ignore = fscanf(fp, "\nCommandfile data:");