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Annotation of 43BSDTahoe/new/X/Xlib/XReadBitmapF.c, revision 1.1.1.1

1.1       root        1: #include <X/mit-copyright.h>
                      2: 
                      3: /* Copyright   Massachusetts Institute of Technology  1985 */
                      4: /* $Header: XReadBitmapF.c,v 10.10 86/11/18 11:54:02 jg Rel $ */
                      5: #include "XlibInternal.h"
                      6: #include <stdio.h>
                      7: #include <errno.h>
                      8: #include <strings.h>
                      9: 
                     10: #define boolean int
                     11: 
                     12: extern int errno;
                     13: 
                     14: Status XReadBitmapFile(filename, width, height, data, x_hot, y_hot)
                     15:     char *filename;
                     16:     register int *width, *height;  /* RETURN; must be non-NULL */
                     17:     register short **data;   /* RETURN */
                     18:     int *x_hot, *y_hot;  /* RETURN; may be NULL */
                     19:     {
                     20:     char variable[81];
                     21:     int status, value, i, data_length;
                     22:     FILE *file = fopen (filename, "r");
                     23: 
                     24:     if (file == NULL)
                     25:        return (0);
                     26: 
                     27:     *width = *height = -1;
                     28:     if (x_hot) *x_hot = -1;
                     29:     if (y_hot) *y_hot = -1;
                     30:     while ((status = fscanf (file, "#define %80s %2d\n", variable, &value))==2)
                     31:        {
                     32:        if (StringEndsWith (variable, "width"))
                     33:            *width = value;
                     34:        else if (StringEndsWith (variable, "height"))
                     35:            *height = value;
                     36:        else if (StringEndsWith (variable, "x_hot")) {
                     37:              if (x_hot) *x_hot = value;
                     38:            }
                     39:        else if (StringEndsWith (variable, "y_hot")) {
                     40:            if (y_hot) *y_hot = value;
                     41:          }
                     42:        }
                     43: 
                     44:     if (*width <= 0) {
                     45:        fclose (file);
                     46:        errno = EINVAL;
                     47:        return (-1);
                     48:        }
                     49:        
                     50:     if (*height <= 0) {
                     51:        fclose (file);
                     52:        errno = EINVAL;
                     53:        return (-2);
                     54:        }
                     55: 
                     56:     data_length = BitmapSize (*width, *height);
                     57:     *data = (short *) malloc (data_length);
                     58:     data_length /= sizeof(short);
                     59:     if (*data == NULL) {
                     60:        fclose (file);
                     61:        return (-3);
                     62:        }
                     63:     
                     64:     status = fscanf (file, "static short %80s = { 0x%4hx", variable,
                     65:        *data);  /* fills in 0th element of *data array */
                     66:     if ((status != 2) || !StringEndsWith (variable, "bits[]")) {
                     67:        free ((char *)*data);
                     68:        fclose (file);
                     69:        errno = EINVAL;
                     70:        return (-4);
                     71:        }
                     72: 
                     73:     for (i=1;i<data_length;i++) {
                     74:        /* fill in i'th element of data array */
                     75:        status = fscanf (file, ", 0x%4hx", *data + i);
                     76:        if (status != 1) {
                     77:            free ((char *)*data);
                     78:            fclose (file);
                     79:            errno = EINVAL;
                     80:            return (-5);
                     81:            }
                     82:        }
                     83: 
                     84:     fclose (file);
                     85:     return (1);
                     86:     }
                     87: 
                     88: /* StringEndsWith returns TRUE if "s" ends with "suffix", else returns FALSE */
                     89: static boolean StringEndsWith (s, suffix)
                     90:   char *s, *suffix;
                     91:   {
                     92:   int s_len = strlen (s);
                     93:   int suffix_len = strlen (suffix);
                     94:   return (strcmp (s + s_len - suffix_len, suffix) == 0);
                     95:   }

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