mirror of
https://github.com/9fans/plan9port.git
synced 2025-01-15 11:20:03 +00:00
91 lines
1.5 KiB
C
91 lines
1.5 KiB
C
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#include <u.h>
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#include <libc.h>
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#include <draw.h>
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#include <memdraw.h>
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#include <ctype.h>
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#include <bio.h>
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#include "imagefile.h"
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void
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usage(void)
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{
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fprint(2, "usage: toppm [-c 'comment'] [file]\n");
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exits("usage");
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}
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void
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main(int argc, char *argv[])
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{
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Biobuf bout;
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Memimage *i, *ni;
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int fd;
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char buf[256];
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char *err, *comment;
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comment = nil;
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ARGBEGIN{
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case 'c':
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comment = ARGF();
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if(comment == nil)
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usage();
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if(strchr(comment, '\n') != nil){
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fprint(2, "ppm: comment cannot contain newlines\n");
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usage();
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}
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break;
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default:
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usage();
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}ARGEND
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if(argc > 1)
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usage();
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if(Binit(&bout, 1, OWRITE) < 0)
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sysfatal("Binit failed: %r");
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memimageinit();
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err = nil;
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if(argc == 0){
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i = readmemimage(0);
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if(i == nil)
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sysfatal("reading input: %r");
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ni = memmultichan(i);
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if(ni == nil)
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sysfatal("converting image to RGBV: %r");
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if(i != ni){
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freememimage(i);
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i = ni;
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}
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if(err == nil)
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err = memwriteppm(&bout, i, comment);
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}else{
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fd = open(argv[0], OREAD);
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if(fd < 0)
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sysfatal("can't open %s: %r", argv[0]);
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i = readmemimage(fd);
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if(i == nil)
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sysfatal("can't readimage %s: %r", argv[0]);
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close(fd);
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ni = memmultichan(i);
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if(ni == nil)
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sysfatal("converting image to RGBV: %r");
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if(i != ni){
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freememimage(i);
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i = ni;
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}
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if(comment)
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err = memwriteppm(&bout, i, comment);
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else{
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snprint(buf, sizeof buf, "Converted by Plan 9 from %s", argv[0]);
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err = memwriteppm(&bout, i, buf);
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}
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freememimage(i);
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}
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if(err != nil)
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fprint(2, "toppm: %s\n", err);
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exits(err);
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}
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