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Annotation of 43BSD/contrib/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 10.8 86/02/01 15:39:24 tony 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:        else if (StringEndsWith (variable, "y_hot"))
                     39:            if (y_hot) *y_hot = value;
                     40:        }
                     41: 
                     42:     if (*width <= 0) {
                     43:        fclose (file);
                     44:        errno = EINVAL;
                     45:        return (-1);
                     46:        }
                     47:        
                     48:     if (*height <= 0) {
                     49:        fclose (file);
                     50:        errno = EINVAL;
                     51:        return (-2);
                     52:        }
                     53: 
                     54:     data_length = BitmapSize (*width, *height);
                     55:     *data = (short *) malloc (data_length);
                     56:     data_length /= sizeof(short);
                     57:     if (*data == NULL) {
                     58:        fclose (file);
                     59:        return (-3);
                     60:        }
                     61:     
                     62:     status = fscanf (file, "static short %80s = { 0x%4hx", variable,
                     63:        *data);  /* fills in 0th element of *data array */
                     64:     if ((status != 2) || !StringEndsWith (variable, "bits[]")) {
                     65:        free (*data);
                     66:        fclose (file);
                     67:        errno = EINVAL;
                     68:        return (-4);
                     69:        }
                     70: 
                     71:     for (i=1;i<data_length;i++) {
                     72:        /* fill in i'th element of data array */
                     73:        status = fscanf (file, ", 0x%4hx", *data + i);
                     74:        if (status != 1) {
                     75:            free (*data);
                     76:            fclose (file);
                     77:            errno = EINVAL;
                     78:            return (-5);
                     79:            }
                     80:        }
                     81: 
                     82:     fclose (file);
                     83:     return (1);
                     84:     }
                     85: 
                     86: /* StringEndsWith returns TRUE if "s" ends with "suffix", else returns FALSE */
                     87: static boolean StringEndsWith (s, suffix)
                     88:   char *s, *suffix;
                     89:   {
                     90:   int s_len = strlen (s);
                     91:   int suffix_len = strlen (suffix);
                     92:   return (strcmp (s + s_len - suffix_len, suffix) == 0);
                     93:   }

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