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Make usage printing more consistent with other tools.
- Introduce a separate usage() function. - Don't use argv[0]. Directly name the application, as we do elsewhere. - Don't prepend the application name. - Don't print two newlines.
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=264823
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@ -196,6 +196,14 @@ static void offtout(off_t x,u_char *buf)
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if(x<0) buf[7]|=0x80;
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}
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static void
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usage(void)
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{
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fprintf(stderr, "usage: bsdiff oldfile newfile patchfile\n");
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exit(1);
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}
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int main(int argc,char *argv[])
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{
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int fd;
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@ -216,7 +224,8 @@ int main(int argc,char *argv[])
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BZFILE * pfbz2;
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int bz2err;
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if(argc!=4) errx(1,"usage: %s oldfile newfile patchfile\n",argv[0]);
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if (argc != 4)
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usage();
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/* Allocate oldsize+1 bytes instead of oldsize bytes to ensure
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that we never try to malloc(0) and get a NULL pointer */
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@ -57,6 +57,14 @@ static off_t offtin(u_char *buf)
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return y;
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}
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static void
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usage(void)
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{
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fprintf(stderr, "usage: bspatch oldfile newfile patchfile\n");
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exit(1);
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}
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int main(int argc,char * argv[])
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{
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FILE * f, * cpf, * dpf, * epf;
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@ -72,7 +80,8 @@ int main(int argc,char * argv[])
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off_t lenread;
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off_t i;
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if(argc!=4) errx(1,"usage: %s oldfile newfile patchfile\n",argv[0]);
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if (argc != 4)
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usage();
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/* Open patch file */
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if ((f = fopen(argv[3], "rb")) == NULL)
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