diff options
Diffstat (limited to 'winsup/mingw/samples/fixargv/fixargv.c')
| -rw-r--r-- | winsup/mingw/samples/fixargv/fixargv.c | 290 |
1 files changed, 0 insertions, 290 deletions
diff --git a/winsup/mingw/samples/fixargv/fixargv.c b/winsup/mingw/samples/fixargv/fixargv.c deleted file mode 100644 index 50c24cd06..000000000 --- a/winsup/mingw/samples/fixargv/fixargv.c +++ /dev/null @@ -1,290 +0,0 @@ -/*
- * fixargv.c
- *
- * A special function which "fixes" an argv array by replacing arguments
- * that need quoting with quoted versions.
- *
- * NOTE: In order to be reasonably consistent there is some misuse of the
- * const keyword here-- which leads to compilation warnings. These
- * should be ok to ignore.
- *
- * This is a sample distributed as part of the Mingw32 package.
- *
- * Contributors:
- * Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
- *
- * THIS SOFTWARE IS NOT COPYRIGHTED
- *
- * This source code is offered for use in the public domain. You may
- * use, modify or distribute it freely.
- *
- * This code is distributed in the hope that it will be useful but
- * WITHOUT ANY WARRANTY. ALL WARRENTIES, EXPRESS OR IMPLIED ARE HEREBY
- * DISCLAMED. This includes but is not limited to warrenties of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * $Revision$
- * $Author$
- * $Date$
- *
- */
-
-#include <string.h>
-#include "fixargv.h"
-
-/*
- * This takes a single string and fixes it, enclosing it in quotes if it
- * contains any spaces and/or escaping the quotes it contains.
- */
-char*
-fix_arg (const char* szArg)
-{
- int nQuoteAll; /* Does the whole arg need quoting? */
- int nBkSlRun; /* How may backslashes in a row? */
- char* sz;
- char* szNew;
- size_t sizeLen;
-
- nQuoteAll = 0;
- nBkSlRun = 0;
- sz = szArg;
- sizeLen = 1;
-
- /* First we figure out how much bigger the new string has to be
- * than the old one. */
- while (*sz != '\0')
- {
- /*
- * Arguments containing whitespace of wildcards will be
- * quoted to preserve tokenization and/or those special
- * characters (i.e. wildcarding will NOT be done at the
- * other end-- they will get the * and ? characters as is).
- * TODO: Is this the best way? Do we want to enable wildcards?
- * If so, when?
- */
- if (!nQuoteAll &&
- (*sz == ' ' || *sz == '\t' || *sz == '*' || *sz == '?'))
- {
- nQuoteAll = 1;
- }
- else if (*sz == '\\')
- {
- nBkSlRun++;
- }
- else
- {
- if (*sz == '\"')
- {
- sizeLen += nBkSlRun + 1;
- }
- nBkSlRun = 0;
- }
-
- sizeLen++;
- sz++;
- }
-
- if (nQuoteAll)
- {
- sizeLen += 2;
- }
-
- /*
- * Make a new string big enough.
- */
- szNew = (char*) malloc (sizeLen);
- if (!szNew)
- {
- return NULL;
- }
- sz = szNew;
-
- /* First enclosing quote for fully quoted args. */
- if (nQuoteAll)
- {
- *sz = '\"';
- sz++;
- }
-
- /*
- * Go through the string putting backslashes in front of quotes,
- * and doubling all backslashes immediately in front of quotes.
- */
- nBkSlRun = 0;
- while (*szArg != '\0')
- {
- if (*szArg == '\\')
- {
- nBkSlRun++;
- }
- else
- {
- if (*szArg == '\"')
- {
- while (nBkSlRun > 0)
- {
- *sz = '\\';
- sz++;
- nBkSlRun--;
- }
- *sz = '\\';
- sz++;
- }
- nBkSlRun = 0;
- }
-
- *sz = *szArg;
- sz++;
- szArg++;
- }
-
- /* Closing quote for fully quoted args. */
- if (nQuoteAll)
- {
- *sz = '\"';
- sz++;
- }
-
- *sz = '\0';
- return szNew;
-}
-
-/*
- * Takes argc and argv and returns a new argv with escaped members. Pass
- * this fixed argv (along with the old one) to free_fixed_argv after
- * you finish with it. Pass in an argc of -1 and make sure the argv vector
- * ends with a null pointer to have fix_argv count the arguments for you.
- */
-char* const*
-fix_argv (int argc, char* const* szaArgv)
-{
- char** szaNew;
- char* sz;
- int i;
-
- if (!szaArgv)
- {
- return NULL;
- }
-
- /*
- * Count the arguments if asked.
- */
- if (argc == -1)
- {
- for (i = 0; szaArgv[i]; i++)
- ;
-
- argc = i;
- }
-
- /*
- * If there are no args or only one arg then do no escaping.
- */
- if (argc < 2)
- {
- return szaArgv;
- }
-
- for (i = 1, szaNew = NULL; i < argc; i++)
- {
- sz = szaArgv[i];
-
- /*
- * If an argument needs fixing, then fix it.
- */
- if (strpbrk (sz, "\" \t*?"))
- {
- /*
- * If we haven't created a new argv list already
- * then make one.
- */
- if (!szaNew)
- {
- szaNew = (char**) malloc ((argc + 1) *
- sizeof (char*));
- if (!szaNew)
- {
- return NULL;
- }
-
- /*
- * Copy previous args from old to new.
- */
- memcpy (szaNew, szaArgv, sizeof(char*) * i);
- }
-
- /*
- * Now do the fixing.
- */
- szaNew[i] = fix_arg (sz);
- if (!szaNew[i])
- {
- /* Fixing failed, free up and return error. */
- free_fixed_argv (szaNew, szaArgv);
- return NULL;
- }
- }
- else if (szaNew)
- {
- szaNew[i] = sz;
- }
- }
-
- if (szaNew)
- {
- /* If we have created a new argv list then we might as well
- * terminate it nicely. (And we depend on it in
- * free_fixed_argv.) */
- szaNew[argc] = NULL;
- }
- else
- {
- /* If we didn't create a new argv list then return the
- * original. */
- return szaArgv;
- }
-
- return szaNew;
-}
-
-void
-free_fixed_argv (char* const* szaFixed, char* const* szaOld)
-{
- char* const* sza;
-
- /*
- * Check for error conditions. Also note that if no corrections
- * were required the fixed argv will actually be the same as
- * the old one, and we don't need to do anything.
- */
- if (!szaFixed || !szaOld || szaFixed == szaOld)
- {
- return;
- }
-
- /*
- * Go through all members of the argv list. If any of the
- * members in the fixed list are different from the old
- * list we free those members.
- * NOTE: The first member is never modified, so we don't need to
- * check.
- */
- sza = szaFixed + 1;
- szaOld++;
- while (*sza)
- {
- if (*sza != *szaOld)
- {
- free (*sza);
- }
- sza++;
- szaOld++;
- }
-
- /*
- * Now we can free the array of char pointers itself.
- */
- free (szaFixed);
-}
-
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