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Fix by Eric Raymond: make the code that looks for various bits of

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tab-setting magic much smarter, more correct, and more easily
extensible.
This commit is contained in:
Guido van Rossum 2000-03-31 00:52:27 +00:00
parent a1f0a8f4a4
commit ab5ca15f94
1 changed files with 30 additions and 15 deletions
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45
Parser/tokenizer.c
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@ -564,24 +564,39 @@ PyTokenizer_Get(tok, p_start, p_end)
/* Set start of current token */ /* Set start of current token */
tok->start = tok->cur - 1; tok->start = tok->cur - 1;
/* Skip comment */ /* Skip comment, while looking for tab-setting magic */
if (c == '#') { if (c == '#') {
/* Hack to allow overriding the tabsize in the file. static char *tabforms[] = {
This is also recognized by vi, when it occurs near the "tab-width:", /* Emacs */
beginning or end of the file. (Will vi never die...?) ":tabstop=", /* vim, full form */
For Python it must be at the beginning of the file! */ ":ts=", /* vim, abbreviated form */
/* XXX The real vi syntax is actually different :-( */ "set tabsize=", /* will vi never die? */
/* XXX Should recognize Emacs syntax, too */ /* more templates can be added here to support other editors */
int x; };
if (sscanf(tok->cur, char cbuf[80];
" vi:set tabsize=%d:", &x) == 1 && char *tp, **cp;
x >= 1 && x <= 40) { tp = cbuf;
/* PySys_WriteStderr("# vi:set tabsize=%d:\n", x); */
tok->tabsize = x;
}
do { do {
*tp++ = c = tok_nextc(tok);
} while (c != EOF && c != '\n' &&
tp - cbuf + 1 < sizeof(cbuf));
*tp = '\0';
for (cp = tabforms;
cp < tabforms + sizeof(tabforms)/sizeof(tabforms[0]);
cp++) {
if ((tp = strstr(cbuf, *cp))) {
int newsize = atoi(tp + strlen(*cp));
if (newsize >= 1 && newsize <= 40) {
tok->tabsize = newsize;
PySys_WriteStderr(
"Tab size set to %d\n",
newsize);
}
}
}
while (c != EOF && c != '\n')
c = tok_nextc(tok); c = tok_nextc(tok);
} while (c != EOF && c != '\n');
} }
/* Check for EOF and errors now */ /* Check for EOF and errors now */