WebSVN – planix.SVN – Blame – /os/branches/feature_fixcpp/sys/src/cmd/jpg/toppm.c

Rev	Author	Line No.	Line
2	-	1	`#include <u.h>`
		2	`#include <libc.h>`
		3	`#include <draw.h>`
		4	`#include <memdraw.h>`
		5	`#include <ctype.h>`
		6	`#include <bio.h>`
		7	`#include "imagefile.h"`
		8
		9	`void`
		10	`usage(void)`
		11	`{`
		12	`fprint(2, "usage: toppm [-c 'comment'] [file]\n");`
		13	`exits("usage");`
		14	`}`
		15
		16	`void`
		17	`main(int argc, char *argv[])`
		18	`{`
		19	`Biobuf bout;`
		20	`Memimage i, ni;`
		21	`int fd;`
		22	`char buf[256];`
		23	`char err, comment;`
		24
		25	`comment = nil;`
		26	`ARGBEGIN{`
		27	`case 'c':`
		28	`comment = ARGF();`
		29	`if(comment == nil)`
		30	`usage();`
		31	`if(strchr(comment, '\n') != nil){`
		32	`fprint(2, "ppm: comment cannot contain newlines\n");`
		33	`usage();`
		34	`}`
		35	`break;`
		36	`default:`
		37	`usage();`
		38	`}ARGEND`
		39
		40	`if(argc > 1)`
		41	`usage();`
		42
		43	`if(Binit(&bout, 1, OWRITE) < 0)`
		44	`sysfatal("Binit failed: %r");`
		45
		46	`memimageinit();`
		47
		48	`err = nil;`
		49
		50	`if(argc == 0){`
		51	`i = readmemimage(0);`
		52	`if(i == nil)`
		53	`sysfatal("reading input: %r");`
		54	`ni = memmultichan(i);`
		55	`if(ni == nil)`
		56	`sysfatal("converting image to RGBV: %r");`
		57	`if(i != ni){`
		58	`freememimage(i);`
		59	`i = ni;`
		60	`}`
		61	`if(err == nil)`
		62	`err = memwriteppm(&bout, i, comment);`
		63	`}else{`
		64	`fd = open(argv[0], OREAD);`
		65	`if(fd < 0)`
		66	`sysfatal("can't open %s: %r", argv[0]);`
		67	`i = readmemimage(fd);`
		68	`if(i == nil)`
		69	`sysfatal("can't readimage %s: %r", argv[0]);`
		70	`close(fd);`
		71	`ni = memmultichan(i);`
		72	`if(ni == nil)`
		73	`sysfatal("converting image to RGBV: %r");`
		74	`if(i != ni){`
		75	`freememimage(i);`
		76	`i = ni;`
		77	`}`
		78	`if(comment)`
		79	`err = memwriteppm(&bout, i, comment);`
		80	`else{`
		81	`snprint(buf, sizeof buf, "Converted by Plan 9 from %s", argv[0]);`
		82	`err = memwriteppm(&bout, i, buf);`
		83	`}`
		84	`freememimage(i);`
		85	`}`
		86
		87	`if(err != nil)`
		88	`fprint(2, "toppm: %s\n", err);`
		89	`exits(err);`
		90	`}`

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