diff options
Diffstat (limited to 'bmtoa.c')
| -rw-r--r-- | bmtoa.c | 191 |
1 files changed, 191 insertions, 0 deletions
@@ -0,0 +1,191 @@ +/* $Xorg: bmtoa.c,v 1.4 2001/02/09 02:05:28 xorgcvs Exp $ */ +/* + +Copyright 1988, 1993, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included +in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR +OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, +ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall +not be used in advertising or otherwise to promote the sale, use or +other dealings in this Software without prior written authorization +from The Open Group. + +*/ + +/* + * bmtoa - bitmap to ascii filter + * Author: Jim Fulton, MIT X Consortium + */ + +#include <stdio.h> +#include <X11/Xlib.h> +#include <X11/Xutil.h> +#include <X11/Xos.h> + +#include <X11/Xmu/Drawing.h> + +extern char *malloc(); +extern char *mktemp(); + +char *ProgramName; + + +static void usage () +{ + fprintf (stderr, "usage: %s [-options ...] [filename]\n\n", + ProgramName); + fprintf (stderr, + "where options include:\n"); + fprintf (stderr, + " -chars cc chars to use for 0 and 1 bits, respectively\n"); + fprintf (stderr, "\n"); + exit (1); +} + +static char *copy_stdin () +{ +#ifdef WIN32 + static char tmpfilename[] = "/temp/bmtoa.XXXXXX"; +#else + static char tmpfilename[] = "/tmp/bmtoa.XXXXXX"; +#endif + char buf[BUFSIZ]; + FILE *fp; + int nread, nwritten; + + if (mktemp (tmpfilename) == NULL) { + fprintf (stderr, + "%s: unable to genererate temporary file name for stdin.\n", + ProgramName); + exit (1); + } + fp = fopen (tmpfilename, "w"); + while (1) { + buf[0] = '\0'; + nread = fread (buf, 1, sizeof buf, stdin); + if (nread <= 0) break; + nwritten = fwrite (buf, 1, nread, fp); + if (nwritten != nread) { + fprintf (stderr, + "%s: error copying stdin to file (%d of %d chars)\n", + ProgramName, nwritten, nread); + (void) fclose (fp); + (void) unlink (tmpfilename); + exit (1); + } + } + (void) fclose (fp); + return tmpfilename; +} + +main (argc, argv) + int argc; + char **argv; +{ + char *filename = NULL; + int isstdin = 0; + char *chars = "-#"; + int i; + unsigned int width, height; + unsigned char *data; + int x_hot, y_hot; + int status; + + ProgramName = argv[0]; + + for (i = 1; i < argc; i++) { + char *arg = argv[i]; + + if (arg[0] == '-') { + switch (arg[1]) { + case '\0': + filename = NULL; + continue; + case 'c': + if (++i >= argc) usage (); + chars = argv[i]; + continue; + default: + usage (); + } + } else { + filename = arg; + } + } + + if (strlen (chars) != 2) { + fprintf (stderr, + "%s: bad character list \"%s\", must have exactly 2 characters\n", + ProgramName, chars); + exit (1); + } + + if (!filename) { + filename = copy_stdin (); + isstdin = 1; + } + + status = XmuReadBitmapDataFromFile (filename, &width, &height, &data, + &x_hot, &y_hot); + if (isstdin) (void) unlink (filename); /* don't need it anymore */ + if (status != BitmapSuccess) { + fprintf (stderr, "%s: unable to read bitmap from file \"%s\"\n", + ProgramName, isstdin ? "(stdin)" : filename); + exit (1); + } + + print_scanline (width, height, data, chars); + exit (0); +} + +print_scanline (width, height, data, chars) + unsigned int width, height; + unsigned char *data; + char *chars; +{ + char *scanline = (char *) malloc (width + 1); + unsigned char *dp = data; + int row, column; + static unsigned char masktable[] = { + 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 }; + int padded = ((width & 7) != 0); + + if (!scanline) { + fprintf (stderr, "%s: unable to allocate %d bytes for scanline\n", + ProgramName, width + 1); + exit (1); + } + + for (row = 0; row < height; row++) { + for (column = 0; column < width; column++) { + int i = (column & 7); + + if (*dp & masktable[i]) { + putchar (chars[1]); + } else { + putchar (chars[0]); + } + + if (i == 7) dp++; + } + putchar ('\n'); + if (padded) dp++; + } + return; +} + |