file(1): recognise unified diff output
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1 changed files with 21 additions and 0 deletions
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@ -167,6 +167,7 @@ int longoff(void);
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int istar(void);
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int isface(void);
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int isexec(void);
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int isudiff(void);
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int p9bitnum(char*, int*);
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int p9subfont(uchar*);
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void print_utf(void);
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@ -183,6 +184,7 @@ int (*call[])(void) =
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iff, /* interchange file format (strings) */
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longoff, /* recognizable by 4 bytes at some offset */
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isoffstr, /* recognizable by string at some offset */
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isudiff, /* unified diff output */
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isrfc822, /* email file */
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ismbox, /* mail box */
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istar, /* recognizable by tar checksum */
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@ -982,6 +984,25 @@ char* html_string[] = {
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0,
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};
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int
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isudiff(void)
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{
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char *p;
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p = (char*)buf;
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if((p = strstr(p, "diff")) != nil)
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if((p = strchr(p, '\n')) != nil)
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if(strncmp(++p, "--- ", 4) == 0)
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if((p = strchr(p, '\n')) != nil)
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if(strncmp(++p, "+++ ", 4) == 0)
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if((p = strchr(p, '\n')) != nil)
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if(strncmp(++p, "@@ ", 3) == 0){
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print("%s\n", mime ? "text/plain" : "unified diff output");
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return 1;
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}
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return 0;
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}
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int
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ishtml(void)
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{
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