ref: dfb4b522830edab8f3856289d326d6cf5e930644
dir: /sys/src/cmd/diff/diff.c/
#include <u.h> #include <libc.h> #include <bio.h> #include "diff.h" void done(int status) { switch(status) { case 0: exits(""); case 1: exits("some"); default: exits("error"); } } void usage(void) { fprint(2, "usage: %s [-abcefmnrw] file1 ... file2\n", argv0); exits("usage"); } void main(int argc, char *argv[]) { int i; Dir *fsb, *tsb; Binit(&stdout, 1, OWRITE); ARGBEGIN{ case 'e': case 'f': case 'n': case 'c': case 'a': case 'u': mode = ARGC(); break; case 'w': bflag = 2; break; case 'b': bflag = 1; break; case 'r': rflag = 1; break; case 'm': mflag = 1; break; case 'h': default: usage(); }ARGEND; if (argc < 2) usage(); if ((tsb = dirstat(argv[argc-1])) == nil) sysfatal("can't stat %s", argv[argc-1]); if (argc > 2) { if (!DIRECTORY(tsb)) sysfatal("not directory: %s", argv[argc-1]); mflag = 1; } else { if ((fsb = dirstat(argv[0])) == nil) sysfatal("can't stat %s", argv[0]); if (DIRECTORY(fsb) && DIRECTORY(tsb)) mflag = 1; free(fsb); } free(tsb); for (i = 0; i < argc-1; i++) diff(argv[i], argv[argc-1], 0); done(anychange); /*NOTREACHED*/ }