mirror of
https://git.tartarus.org/simon/putty.git
synced 2025-06-30 11:02:48 -05:00
Now that we have Subversion's file renaming ability, it's time at
long last to move all the Windows-specific source files down into a `windows' subdirectory. Only platform-specific files remain at the top level. With any luck this will act as a hint to anyone still contemplating sending us a Windows-centric patch... [originally from svn r4792]
This commit is contained in:
Simon Tatham
463
windows/winutils.c
Normal file
463
windows/winutils.c
Normal file
@ -0,0 +1,463 @@
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||||
/*
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* winutils.c: miscellaneous Windows utilities for GUI apps
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include "misc.h"
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#ifdef TESTMODE
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/* Definitions to allow this module to be compiled standalone for testing. */
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#define smalloc malloc
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#define srealloc realloc
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#define sfree free
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#endif
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/*
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* Split a complete command line into argc/argv, attempting to do
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* it exactly the same way Windows itself would do it (so that
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* console utilities, which receive argc and argv from Windows,
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* will have their command lines processed in the same way as GUI
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* utilities which get a whole command line and must break it
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* themselves).
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*
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* Does not modify the input command line.
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*
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* The final parameter (argstart) is used to return a second array
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* of char * pointers, the same length as argv, each one pointing
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* at the start of the corresponding element of argv in the
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* original command line. So if you get half way through processing
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* your command line in argc/argv form and then decide you want to
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* treat the rest as a raw string, you can. If you don't want to,
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* `argstart' can be safely left NULL.
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*/
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void split_into_argv(char *cmdline, int *argc, char ***argv,
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char ***argstart)
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{
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char *p;
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char *outputline, *q;
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char **outputargv, **outputargstart;
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int outputargc;
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/*
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* At first glance the rules appeared to be:
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*
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* - Single quotes are not special characters.
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*
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* - Double quotes are removed, but within them spaces cease
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* to be special.
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*
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* - Backslashes are _only_ special when a sequence of them
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* appear just before a double quote. In this situation,
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* they are treated like C backslashes: so \" just gives a
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* literal quote, \\" gives a literal backslash and then
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* opens or closes a double-quoted segment, \\\" gives a
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* literal backslash and then a literal quote, \\\\" gives
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* two literal backslashes and then opens/closes a
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* double-quoted segment, and so forth. Note that this
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* behaviour is identical inside and outside double quotes.
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*
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* - Two successive double quotes become one literal double
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* quote, but only _inside_ a double-quoted segment.
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* Outside, they just form an empty double-quoted segment
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* (which may cause an empty argument word).
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*
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* - That only leaves the interesting question of what happens
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* when one or more backslashes precedes two or more double
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* quotes, starting inside a double-quoted string. And the
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* answer to that appears somewhat bizarre. Here I tabulate
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* number of backslashes (across the top) against number of
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* quotes (down the left), and indicate how many backslashes
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* are output, how many quotes are output, and whether a
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* quoted segment is open at the end of the sequence:
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*
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* backslashes
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*
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* 0 1 2 3 4
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*
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||||
* 0 0,0,y | 1,0,y 2,0,y 3,0,y 4,0,y
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||||
* --------+-----------------------------
|
||||
* 1 0,0,n | 0,1,y 1,0,n 1,1,y 2,0,n
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||||
* q 2 0,1,n | 0,1,n 1,1,n 1,1,n 2,1,n
|
||||
* u 3 0,1,y | 0,2,n 1,1,y 1,2,n 2,1,y
|
||||
* o 4 0,1,n | 0,2,y 1,1,n 1,2,y 2,1,n
|
||||
* t 5 0,2,n | 0,2,n 1,2,n 1,2,n 2,2,n
|
||||
* e 6 0,2,y | 0,3,n 1,2,y 1,3,n 2,2,y
|
||||
* s 7 0,2,n | 0,3,y 1,2,n 1,3,y 2,2,n
|
||||
* 8 0,3,n | 0,3,n 1,3,n 1,3,n 2,3,n
|
||||
* 9 0,3,y | 0,4,n 1,3,y 1,4,n 2,3,y
|
||||
* 10 0,3,n | 0,4,y 1,3,n 1,4,y 2,3,n
|
||||
* 11 0,4,n | 0,4,n 1,4,n 1,4,n 2,4,n
|
||||
*
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||||
*
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||||
* [Test fragment was of the form "a\\\"""b c" d.]
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*
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||||
* There is very weird mod-3 behaviour going on here in the
|
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* number of quotes, and it even applies when there aren't any
|
||||
* backslashes! How ghastly.
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||||
*
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||||
* With a bit of thought, this extremely odd diagram suddenly
|
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* coalesced itself into a coherent, if still ghastly, model of
|
||||
* how things work:
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*
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||||
* - As before, backslashes are only special when one or more
|
||||
* of them appear contiguously before at least one double
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* quote. In this situation the backslashes do exactly what
|
||||
* you'd expect: each one quotes the next thing in front of
|
||||
* it, so you end up with n/2 literal backslashes (if n is
|
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* even) or (n-1)/2 literal backslashes and a literal quote
|
||||
* (if n is odd). In the latter case the double quote
|
||||
* character right after the backslashes is used up.
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||||
*
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||||
* - After that, any remaining double quotes are processed. A
|
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* string of contiguous unescaped double quotes has a mod-3
|
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* behaviour:
|
||||
*
|
||||
* * inside a quoted segment, a quote ends the segment.
|
||||
* * _immediately_ after ending a quoted segment, a quote
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||||
* simply produces a literal quote.
|
||||
* * otherwise, outside a quoted segment, a quote begins a
|
||||
* quoted segment.
|
||||
*
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||||
* So, for example, if we started inside a quoted segment
|
||||
* then two contiguous quotes would close the segment and
|
||||
* produce a literal quote; three would close the segment,
|
||||
* produce a literal quote, and open a new segment. If we
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||||
* started outside a quoted segment, then two contiguous
|
||||
* quotes would open and then close a segment, producing no
|
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* output (but potentially creating a zero-length argument);
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* but three quotes would open and close a segment and then
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* produce a literal quote.
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*/
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/*
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* First deal with the simplest of all special cases: if there
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* aren't any arguments, return 0,NULL,NULL.
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||||
*/
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while (*cmdline && isspace(*cmdline)) cmdline++;
|
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if (!*cmdline) {
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if (argc) *argc = 0;
|
||||
if (argv) *argv = NULL;
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if (argstart) *argstart = NULL;
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return;
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}
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||||
/*
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* This will guaranteeably be big enough; we can realloc it
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* down later.
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*/
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outputline = snewn(1+strlen(cmdline), char);
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outputargv = snewn(strlen(cmdline)+1 / 2, char *);
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outputargstart = snewn(strlen(cmdline)+1 / 2, char *);
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||||
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p = cmdline; q = outputline; outputargc = 0;
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||||
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while (*p) {
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int quote;
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||||
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||||
/* Skip whitespace searching for start of argument. */
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while (*p && isspace(*p)) p++;
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if (!*p) break;
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||||
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||||
/* We have an argument; start it. */
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||||
outputargv[outputargc] = q;
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outputargstart[outputargc] = p;
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outputargc++;
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||||
quote = 0;
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||||
|
||||
/* Copy data into the argument until it's finished. */
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||||
while (*p) {
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||||
if (!quote && isspace(*p))
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||||
break; /* argument is finished */
|
||||
|
||||
if (*p == '"' || *p == '\\') {
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||||
/*
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||||
* We have a sequence of zero or more backslashes
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* followed by a sequence of zero or more quotes.
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* Count up how many of each, and then deal with
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||||
* them as appropriate.
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*/
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int i, slashes = 0, quotes = 0;
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while (*p == '\\') slashes++, p++;
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while (*p == '"') quotes++, p++;
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|
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if (!quotes) {
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/*
|
||||
* Special case: if there are no quotes,
|
||||
* slashes are not special at all, so just copy
|
||||
* n slashes to the output string.
|
||||
*/
|
||||
while (slashes--) *q++ = '\\';
|
||||
} else {
|
||||
/* Slashes annihilate in pairs. */
|
||||
while (slashes >= 2) slashes -= 2, *q++ = '\\';
|
||||
|
||||
/* One remaining slash takes out the first quote. */
|
||||
if (slashes) quotes--, *q++ = '"';
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||||
|
||||
if (quotes > 0) {
|
||||
/* Outside a quote segment, a quote starts one. */
|
||||
if (!quote) quotes--, quote = 1;
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||||
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/* Now we produce (n+1)/3 literal quotes... */
|
||||
for (i = 3; i <= quotes+1; i += 3) *q++ = '"';
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||||
|
||||
/* ... and end in a quote segment iff 3 divides n. */
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quote = (quotes % 3 == 0);
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||||
}
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||||
}
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||||
} else {
|
||||
*q++ = *p++;
|
||||
}
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||||
}
|
||||
|
||||
/* At the end of an argument, just append a trailing NUL. */
|
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*q++ = '\0';
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}
|
||||
|
||||
outputargv = sresize(outputargv, outputargc, char *);
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outputargstart = sresize(outputargstart, outputargc, char *);
|
||||
|
||||
if (argc) *argc = outputargc;
|
||||
if (argv) *argv = outputargv; else sfree(outputargv);
|
||||
if (argstart) *argstart = outputargstart; else sfree(outputargstart);
|
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}
|
||||
|
||||
#ifdef TESTMODE
|
||||
|
||||
const struct argv_test {
|
||||
const char *cmdline;
|
||||
const char *argv[10];
|
||||
} argv_tests[] = {
|
||||
/*
|
||||
* We generate this set of tests by invoking ourself with
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||||
* `-generate'.
|
||||
*/
|
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{"ab c\" d", {"ab", "c d", NULL}},
|
||||
{"a\"b c\" d", {"ab c", "d", NULL}},
|
||||
{"a\"\"b c\" d", {"ab", "c d", NULL}},
|
||||
{"a\"\"\"b c\" d", {"a\"b", "c d", NULL}},
|
||||
{"a\"\"\"\"b c\" d", {"a\"b c", "d", NULL}},
|
||||
{"a\"\"\"\"\"b c\" d", {"a\"b", "c d", NULL}},
|
||||
{"a\"\"\"\"\"\"b c\" d", {"a\"\"b", "c d", NULL}},
|
||||
{"a\"\"\"\"\"\"\"b c\" d", {"a\"\"b c", "d", NULL}},
|
||||
{"a\"\"\"\"\"\"\"\"b c\" d", {"a\"\"b", "c d", NULL}},
|
||||
{"a\\b c\" d", {"a\\b", "c d", NULL}},
|
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{"a\\\"b c\" d", {"a\"b", "c d", NULL}},
|
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{"a\\\"\"b c\" d", {"a\"b c", "d", NULL}},
|
||||
{"a\\\"\"\"b c\" d", {"a\"b", "c d", NULL}},
|
||||
{"a\\\"\"\"\"b c\" d", {"a\"\"b", "c d", NULL}},
|
||||
{"a\\\"\"\"\"\"b c\" d", {"a\"\"b c", "d", NULL}},
|
||||
{"a\\\"\"\"\"\"\"b c\" d", {"a\"\"b", "c d", NULL}},
|
||||
{"a\\\"\"\"\"\"\"\"b c\" d", {"a\"\"\"b", "c d", NULL}},
|
||||
{"a\\\"\"\"\"\"\"\"\"b c\" d", {"a\"\"\"b c", "d", NULL}},
|
||||
{"a\\\\b c\" d", {"a\\\\b", "c d", NULL}},
|
||||
{"a\\\\\"b c\" d", {"a\\b c", "d", NULL}},
|
||||
{"a\\\\\"\"b c\" d", {"a\\b", "c d", NULL}},
|
||||
{"a\\\\\"\"\"b c\" d", {"a\\\"b", "c d", NULL}},
|
||||
{"a\\\\\"\"\"\"b c\" d", {"a\\\"b c", "d", NULL}},
|
||||
{"a\\\\\"\"\"\"\"b c\" d", {"a\\\"b", "c d", NULL}},
|
||||
{"a\\\\\"\"\"\"\"\"b c\" d", {"a\\\"\"b", "c d", NULL}},
|
||||
{"a\\\\\"\"\"\"\"\"\"b c\" d", {"a\\\"\"b c", "d", NULL}},
|
||||
{"a\\\\\"\"\"\"\"\"\"\"b c\" d", {"a\\\"\"b", "c d", NULL}},
|
||||
{"a\\\\\\b c\" d", {"a\\\\\\b", "c d", NULL}},
|
||||
{"a\\\\\\\"b c\" d", {"a\\\"b", "c d", NULL}},
|
||||
{"a\\\\\\\"\"b c\" d", {"a\\\"b c", "d", NULL}},
|
||||
{"a\\\\\\\"\"\"b c\" d", {"a\\\"b", "c d", NULL}},
|
||||
{"a\\\\\\\"\"\"\"b c\" d", {"a\\\"\"b", "c d", NULL}},
|
||||
{"a\\\\\\\"\"\"\"\"b c\" d", {"a\\\"\"b c", "d", NULL}},
|
||||
{"a\\\\\\\"\"\"\"\"\"b c\" d", {"a\\\"\"b", "c d", NULL}},
|
||||
{"a\\\\\\\"\"\"\"\"\"\"b c\" d", {"a\\\"\"\"b", "c d", NULL}},
|
||||
{"a\\\\\\\"\"\"\"\"\"\"\"b c\" d", {"a\\\"\"\"b c", "d", NULL}},
|
||||
{"a\\\\\\\\b c\" d", {"a\\\\\\\\b", "c d", NULL}},
|
||||
{"a\\\\\\\\\"b c\" d", {"a\\\\b c", "d", NULL}},
|
||||
{"a\\\\\\\\\"\"b c\" d", {"a\\\\b", "c d", NULL}},
|
||||
{"a\\\\\\\\\"\"\"b c\" d", {"a\\\\\"b", "c d", NULL}},
|
||||
{"a\\\\\\\\\"\"\"\"b c\" d", {"a\\\\\"b c", "d", NULL}},
|
||||
{"a\\\\\\\\\"\"\"\"\"b c\" d", {"a\\\\\"b", "c d", NULL}},
|
||||
{"a\\\\\\\\\"\"\"\"\"\"b c\" d", {"a\\\\\"\"b", "c d", NULL}},
|
||||
{"a\\\\\\\\\"\"\"\"\"\"\"b c\" d", {"a\\\\\"\"b c", "d", NULL}},
|
||||
{"a\\\\\\\\\"\"\"\"\"\"\"\"b c\" d", {"a\\\\\"\"b", "c d", NULL}},
|
||||
{"\"ab c\" d", {"ab c", "d", NULL}},
|
||||
{"\"a\"b c\" d", {"ab", "c d", NULL}},
|
||||
{"\"a\"\"b c\" d", {"a\"b", "c d", NULL}},
|
||||
{"\"a\"\"\"b c\" d", {"a\"b c", "d", NULL}},
|
||||
{"\"a\"\"\"\"b c\" d", {"a\"b", "c d", NULL}},
|
||||
{"\"a\"\"\"\"\"b c\" d", {"a\"\"b", "c d", NULL}},
|
||||
{"\"a\"\"\"\"\"\"b c\" d", {"a\"\"b c", "d", NULL}},
|
||||
{"\"a\"\"\"\"\"\"\"b c\" d", {"a\"\"b", "c d", NULL}},
|
||||
{"\"a\"\"\"\"\"\"\"\"b c\" d", {"a\"\"\"b", "c d", NULL}},
|
||||
{"\"a\\b c\" d", {"a\\b c", "d", NULL}},
|
||||
{"\"a\\\"b c\" d", {"a\"b c", "d", NULL}},
|
||||
{"\"a\\\"\"b c\" d", {"a\"b", "c d", NULL}},
|
||||
{"\"a\\\"\"\"b c\" d", {"a\"\"b", "c d", NULL}},
|
||||
{"\"a\\\"\"\"\"b c\" d", {"a\"\"b c", "d", NULL}},
|
||||
{"\"a\\\"\"\"\"\"b c\" d", {"a\"\"b", "c d", NULL}},
|
||||
{"\"a\\\"\"\"\"\"\"b c\" d", {"a\"\"\"b", "c d", NULL}},
|
||||
{"\"a\\\"\"\"\"\"\"\"b c\" d", {"a\"\"\"b c", "d", NULL}},
|
||||
{"\"a\\\"\"\"\"\"\"\"\"b c\" d", {"a\"\"\"b", "c d", NULL}},
|
||||
{"\"a\\\\b c\" d", {"a\\\\b c", "d", NULL}},
|
||||
{"\"a\\\\\"b c\" d", {"a\\b", "c d", NULL}},
|
||||
{"\"a\\\\\"\"b c\" d", {"a\\\"b", "c d", NULL}},
|
||||
{"\"a\\\\\"\"\"b c\" d", {"a\\\"b c", "d", NULL}},
|
||||
{"\"a\\\\\"\"\"\"b c\" d", {"a\\\"b", "c d", NULL}},
|
||||
{"\"a\\\\\"\"\"\"\"b c\" d", {"a\\\"\"b", "c d", NULL}},
|
||||
{"\"a\\\\\"\"\"\"\"\"b c\" d", {"a\\\"\"b c", "d", NULL}},
|
||||
{"\"a\\\\\"\"\"\"\"\"\"b c\" d", {"a\\\"\"b", "c d", NULL}},
|
||||
{"\"a\\\\\"\"\"\"\"\"\"\"b c\" d", {"a\\\"\"\"b", "c d", NULL}},
|
||||
{"\"a\\\\\\b c\" d", {"a\\\\\\b c", "d", NULL}},
|
||||
{"\"a\\\\\\\"b c\" d", {"a\\\"b c", "d", NULL}},
|
||||
{"\"a\\\\\\\"\"b c\" d", {"a\\\"b", "c d", NULL}},
|
||||
{"\"a\\\\\\\"\"\"b c\" d", {"a\\\"\"b", "c d", NULL}},
|
||||
{"\"a\\\\\\\"\"\"\"b c\" d", {"a\\\"\"b c", "d", NULL}},
|
||||
{"\"a\\\\\\\"\"\"\"\"b c\" d", {"a\\\"\"b", "c d", NULL}},
|
||||
{"\"a\\\\\\\"\"\"\"\"\"b c\" d", {"a\\\"\"\"b", "c d", NULL}},
|
||||
{"\"a\\\\\\\"\"\"\"\"\"\"b c\" d", {"a\\\"\"\"b c", "d", NULL}},
|
||||
{"\"a\\\\\\\"\"\"\"\"\"\"\"b c\" d", {"a\\\"\"\"b", "c d", NULL}},
|
||||
{"\"a\\\\\\\\b c\" d", {"a\\\\\\\\b c", "d", NULL}},
|
||||
{"\"a\\\\\\\\\"b c\" d", {"a\\\\b", "c d", NULL}},
|
||||
{"\"a\\\\\\\\\"\"b c\" d", {"a\\\\\"b", "c d", NULL}},
|
||||
{"\"a\\\\\\\\\"\"\"b c\" d", {"a\\\\\"b c", "d", NULL}},
|
||||
{"\"a\\\\\\\\\"\"\"\"b c\" d", {"a\\\\\"b", "c d", NULL}},
|
||||
{"\"a\\\\\\\\\"\"\"\"\"b c\" d", {"a\\\\\"\"b", "c d", NULL}},
|
||||
{"\"a\\\\\\\\\"\"\"\"\"\"b c\" d", {"a\\\\\"\"b c", "d", NULL}},
|
||||
{"\"a\\\\\\\\\"\"\"\"\"\"\"b c\" d", {"a\\\\\"\"b", "c d", NULL}},
|
||||
{"\"a\\\\\\\\\"\"\"\"\"\"\"\"b c\" d", {"a\\\\\"\"\"b", "c d", NULL}},
|
||||
};
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
int i, j;
|
||||
|
||||
if (argc > 1) {
|
||||
/*
|
||||
* Generation of tests.
|
||||
*
|
||||
* Given `-splat <args>', we print out a C-style
|
||||
* representation of each argument (in the form "a", "b",
|
||||
* NULL), backslash-escaping each backslash and double
|
||||
* quote.
|
||||
*
|
||||
* Given `-split <string>', we first doctor `string' by
|
||||
* turning forward slashes into backslashes, single quotes
|
||||
* into double quotes and underscores into spaces; and then
|
||||
* we feed the resulting string to ourself with `-splat'.
|
||||
*
|
||||
* Given `-generate', we concoct a variety of fun test
|
||||
* cases, encode them in quote-safe form (mapping \, " and
|
||||
* space to /, ' and _ respectively) and feed each one to
|
||||
* `-split'.
|
||||
*/
|
||||
if (!strcmp(argv[1], "-splat")) {
|
||||
int i;
|
||||
char *p;
|
||||
for (i = 2; i < argc; i++) {
|
||||
putchar('"');
|
||||
for (p = argv[i]; *p; p++) {
|
||||
if (*p == '\\' || *p == '"')
|
||||
putchar('\\');
|
||||
putchar(*p);
|
||||
}
|
||||
printf("\", ");
|
||||
}
|
||||
printf("NULL");
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (!strcmp(argv[1], "-split") && argc > 2) {
|
||||
char *str = malloc(20 + strlen(argv[0]) + strlen(argv[2]));
|
||||
char *p, *q;
|
||||
|
||||
q = str + sprintf(str, "%s -splat ", argv[0]);
|
||||
printf(" {\"");
|
||||
for (p = argv[2]; *p; p++, q++) {
|
||||
switch (*p) {
|
||||
case '/': printf("\\\\"); *q = '\\'; break;
|
||||
case '\'': printf("\\\""); *q = '"'; break;
|
||||
case '_': printf(" "); *q = ' '; break;
|
||||
default: putchar(*p); *q = *p; break;
|
||||
}
|
||||
}
|
||||
*p = '\0';
|
||||
printf("\", {");
|
||||
fflush(stdout);
|
||||
|
||||
system(str);
|
||||
|
||||
printf("}},\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (!strcmp(argv[1], "-generate")) {
|
||||
char *teststr, *p;
|
||||
int i, initialquote, backslashes, quotes;
|
||||
|
||||
teststr = malloc(200 + strlen(argv[0]));
|
||||
|
||||
for (initialquote = 0; initialquote <= 1; initialquote++) {
|
||||
for (backslashes = 0; backslashes < 5; backslashes++) {
|
||||
for (quotes = 0; quotes < 9; quotes++) {
|
||||
p = teststr + sprintf(teststr, "%s -split ", argv[0]);
|
||||
if (initialquote) *p++ = '\'';
|
||||
*p++ = 'a';
|
||||
for (i = 0; i < backslashes; i++) *p++ = '/';
|
||||
for (i = 0; i < quotes; i++) *p++ = '\'';
|
||||
*p++ = 'b';
|
||||
*p++ = '_';
|
||||
*p++ = 'c';
|
||||
*p++ = '\'';
|
||||
*p++ = '_';
|
||||
*p++ = 'd';
|
||||
*p = '\0';
|
||||
|
||||
system(teststr);
|
||||
}
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
fprintf(stderr, "unrecognised option: \"%s\"\n", argv[1]);
|
||||
return 1;
|
||||
}
|
||||
|
||||
/*
|
||||
* If we get here, we were invoked with no arguments, so just
|
||||
* run the tests.
|
||||
*/
|
||||
|
||||
for (i = 0; i < lenof(argv_tests); i++) {
|
||||
int ac;
|
||||
char **av;
|
||||
|
||||
split_into_argv(argv_tests[i].cmdline, &ac, &av);
|
||||
|
||||
for (j = 0; j < ac && argv_tests[i].argv[j]; j++) {
|
||||
if (strcmp(av[j], argv_tests[i].argv[j])) {
|
||||
printf("failed test %d (|%s|) arg %d: |%s| should be |%s|\n",
|
||||
i, argv_tests[i].cmdline,
|
||||
j, av[j], argv_tests[i].argv[j]);
|
||||
}
|
||||
#ifdef VERBOSE
|
||||
else {
|
||||
printf("test %d (|%s|) arg %d: |%s| == |%s|\n",
|
||||
i, argv_tests[i].cmdline,
|
||||
j, av[j], argv_tests[i].argv[j]);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
if (j < ac)
|
||||
printf("failed test %d (|%s|): %d args returned, should be %d\n",
|
||||
i, argv_tests[i].cmdline, ac, j);
|
||||
if (argv_tests[i].argv[j])
|
||||
printf("failed test %d (|%s|): %d args returned, should be more\n",
|
||||
i, argv_tests[i].cmdline, ac);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif
|
||||
Reference in New Issue
Block a user