mirror of
git://git.gnupg.org/gnupg.git
synced 2024-12-23 10:29:58 +01:00
55ba204bfa
Pass PINENTRY_USER_DATA and XAUTHORITY to Pinentry. Improved support for the quality bar. Minor internal restructuring. Translation fixes.
925 lines
20 KiB
C
925 lines
20 KiB
C
/* stringhelp.c - standard string helper functions
|
||
* Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004, 2005,
|
||
* 2006, 2007 Free Software Foundation, Inc.
|
||
*
|
||
* This file is part of JNLIB.
|
||
*
|
||
* JNLIB is free software; you can redistribute it and/or modify it
|
||
* under the terms of the GNU Lesser General Public License as
|
||
* published by the Free Software Foundation; either version 3 of
|
||
* the License, or (at your option) any later version.
|
||
*
|
||
* JNLIB is distributed in the hope that it will be useful, but
|
||
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
* Lesser General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Lesser General Public
|
||
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
#include <config.h>
|
||
#include <stdlib.h>
|
||
#include <string.h>
|
||
#include <stdarg.h>
|
||
#include <ctype.h>
|
||
#ifdef HAVE_W32_SYSTEM
|
||
#include <windows.h>
|
||
#endif
|
||
|
||
#include "libjnlib-config.h"
|
||
#include "utf8conv.h"
|
||
#include "stringhelp.h"
|
||
|
||
|
||
#define tohex_lower(n) ((n) < 10 ? ((n) + '0') : (((n) - 10) + 'a'))
|
||
|
||
/*
|
||
* Look for the substring SUB in buffer and return a pointer to that
|
||
* substring in BUFFER or NULL if not found.
|
||
* Comparison is case-insensitive.
|
||
*/
|
||
const char *
|
||
memistr (const void *buffer, size_t buflen, const char *sub)
|
||
{
|
||
const unsigned char *buf = buffer;
|
||
const unsigned char *t = (const unsigned char *)buffer;
|
||
const unsigned char *s = (const unsigned char *)sub;
|
||
size_t n = buflen;
|
||
|
||
for ( ; n ; t++, n-- )
|
||
{
|
||
if ( toupper (*t) == toupper (*s) )
|
||
{
|
||
for ( buf=t++, buflen = n--, s++;
|
||
n && toupper (*t) == toupper (*s); t++, s++, n-- )
|
||
;
|
||
if (!*s)
|
||
return (const char*)buf;
|
||
t = buf;
|
||
s = (const unsigned char *)sub ;
|
||
n = buflen;
|
||
}
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
const char *
|
||
ascii_memistr ( const void *buffer, size_t buflen, const char *sub )
|
||
{
|
||
const unsigned char *buf = buffer;
|
||
const unsigned char *t = (const unsigned char *)buf;
|
||
const unsigned char *s = (const unsigned char *)sub;
|
||
size_t n = buflen;
|
||
|
||
for ( ; n ; t++, n-- )
|
||
{
|
||
if (ascii_toupper (*t) == ascii_toupper (*s) )
|
||
{
|
||
for ( buf=t++, buflen = n--, s++;
|
||
n && ascii_toupper (*t) == ascii_toupper (*s); t++, s++, n-- )
|
||
;
|
||
if (!*s)
|
||
return (const char*)buf;
|
||
t = (const unsigned char *)buf;
|
||
s = (const unsigned char *)sub ;
|
||
n = buflen;
|
||
}
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
/* This function is similar to strncpy(). However it won't copy more
|
||
than N - 1 characters and makes sure that a '\0' is appended. With
|
||
N given as 0, nothing will happen. With DEST given as NULL, memory
|
||
will be allocated using jnlib_xmalloc (i.e. if it runs out of core
|
||
the function terminates). Returns DES or a pointer to the
|
||
allocated memory.
|
||
*/
|
||
char *
|
||
mem2str( char *dest , const void *src , size_t n )
|
||
{
|
||
char *d;
|
||
const char *s;
|
||
|
||
if( n ) {
|
||
if( !dest )
|
||
dest = jnlib_xmalloc( n ) ;
|
||
d = dest;
|
||
s = src ;
|
||
for(n--; n && *s; n-- )
|
||
*d++ = *s++;
|
||
*d = '\0' ;
|
||
}
|
||
|
||
return dest ;
|
||
}
|
||
|
||
|
||
/****************
|
||
* remove leading and trailing white spaces
|
||
*/
|
||
char *
|
||
trim_spaces( char *str )
|
||
{
|
||
char *string, *p, *mark;
|
||
|
||
string = str;
|
||
/* find first non space character */
|
||
for( p=string; *p && isspace( *(byte*)p ) ; p++ )
|
||
;
|
||
/* move characters */
|
||
for( (mark = NULL); (*string = *p); string++, p++ )
|
||
if( isspace( *(byte*)p ) ) {
|
||
if( !mark )
|
||
mark = string ;
|
||
}
|
||
else
|
||
mark = NULL ;
|
||
if( mark )
|
||
*mark = '\0' ; /* remove trailing spaces */
|
||
|
||
return str ;
|
||
}
|
||
|
||
/****************
|
||
* remove trailing white spaces
|
||
*/
|
||
char *
|
||
trim_trailing_spaces( char *string )
|
||
{
|
||
char *p, *mark;
|
||
|
||
for( mark = NULL, p = string; *p; p++ ) {
|
||
if( isspace( *(byte*)p ) ) {
|
||
if( !mark )
|
||
mark = p;
|
||
}
|
||
else
|
||
mark = NULL;
|
||
}
|
||
if( mark )
|
||
*mark = '\0' ;
|
||
|
||
return string ;
|
||
}
|
||
|
||
|
||
unsigned
|
||
trim_trailing_chars( byte *line, unsigned len, const char *trimchars )
|
||
{
|
||
byte *p, *mark;
|
||
unsigned n;
|
||
|
||
for(mark=NULL, p=line, n=0; n < len; n++, p++ ) {
|
||
if( strchr(trimchars, *p ) ) {
|
||
if( !mark )
|
||
mark = p;
|
||
}
|
||
else
|
||
mark = NULL;
|
||
}
|
||
|
||
if( mark ) {
|
||
*mark = 0;
|
||
return mark - line;
|
||
}
|
||
return len;
|
||
}
|
||
|
||
/****************
|
||
* remove trailing white spaces and return the length of the buffer
|
||
*/
|
||
unsigned
|
||
trim_trailing_ws( byte *line, unsigned len )
|
||
{
|
||
return trim_trailing_chars( line, len, " \t\r\n" );
|
||
}
|
||
|
||
size_t
|
||
length_sans_trailing_chars (const unsigned char *line, size_t len,
|
||
const char *trimchars )
|
||
{
|
||
const unsigned char *p, *mark;
|
||
size_t n;
|
||
|
||
for( mark=NULL, p=line, n=0; n < len; n++, p++ )
|
||
{
|
||
if (strchr (trimchars, *p ))
|
||
{
|
||
if( !mark )
|
||
mark = p;
|
||
}
|
||
else
|
||
mark = NULL;
|
||
}
|
||
|
||
if (mark)
|
||
return mark - line;
|
||
return len;
|
||
}
|
||
|
||
/*
|
||
* Return the length of line ignoring trailing white-space.
|
||
*/
|
||
size_t
|
||
length_sans_trailing_ws (const unsigned char *line, size_t len)
|
||
{
|
||
return length_sans_trailing_chars (line, len, " \t\r\n");
|
||
}
|
||
|
||
|
||
|
||
/***************
|
||
* Extract from a given path the filename component.
|
||
*
|
||
*/
|
||
char *
|
||
make_basename(const char *filepath, const char *inputpath)
|
||
{
|
||
char *p;
|
||
|
||
#ifdef __riscos__
|
||
return riscos_make_basename(filepath, inputpath);
|
||
#endif
|
||
|
||
if ( !(p=strrchr(filepath, '/')) )
|
||
#ifdef HAVE_DRIVE_LETTERS
|
||
if ( !(p=strrchr(filepath, '\\')) )
|
||
if ( !(p=strrchr(filepath, ':')) )
|
||
#endif
|
||
{
|
||
return jnlib_xstrdup(filepath);
|
||
}
|
||
|
||
return jnlib_xstrdup(p+1);
|
||
}
|
||
|
||
|
||
|
||
/***************
|
||
* Extract from a given filename the path prepended to it.
|
||
* If their isn't a path prepended to the filename, a dot
|
||
* is returned ('.').
|
||
*
|
||
*/
|
||
char *
|
||
make_dirname(const char *filepath)
|
||
{
|
||
char *dirname;
|
||
int dirname_length;
|
||
char *p;
|
||
|
||
if ( !(p=strrchr(filepath, '/')) )
|
||
#ifdef HAVE_DRIVE_LETTERS
|
||
if ( !(p=strrchr(filepath, '\\')) )
|
||
if ( !(p=strrchr(filepath, ':')) )
|
||
#endif
|
||
{
|
||
return jnlib_xstrdup(".");
|
||
}
|
||
|
||
dirname_length = p-filepath;
|
||
dirname = jnlib_xmalloc(dirname_length+1);
|
||
strncpy(dirname, filepath, dirname_length);
|
||
dirname[dirname_length] = 0;
|
||
|
||
return dirname;
|
||
}
|
||
|
||
|
||
|
||
/****************
|
||
* Construct a filename from the NULL terminated list of parts.
|
||
* Tilde expansion is done here.
|
||
*/
|
||
char *
|
||
make_filename( const char *first_part, ... )
|
||
{
|
||
va_list arg_ptr ;
|
||
size_t n;
|
||
const char *s;
|
||
char *name, *home, *p;
|
||
|
||
va_start (arg_ptr, first_part);
|
||
n = strlen (first_part) + 1;
|
||
while ( (s = va_arg (arg_ptr, const char *)) )
|
||
n += strlen(s) + 1;
|
||
va_end(arg_ptr);
|
||
|
||
home = NULL;
|
||
if ( *first_part == '~' && first_part[1] == '/'
|
||
&& (home = getenv("HOME")) && *home )
|
||
n += strlen (home);
|
||
|
||
name = jnlib_xmalloc (n);
|
||
p = (home
|
||
? stpcpy (stpcpy (name,home), first_part + 1)
|
||
: stpcpy(name, first_part));
|
||
|
||
va_start (arg_ptr, first_part) ;
|
||
while ( (s = va_arg(arg_ptr, const char *)) )
|
||
p = stpcpy (stpcpy (p,"/"), s);
|
||
va_end(arg_ptr);
|
||
|
||
#ifdef HAVE_DRIVE_LETTERS
|
||
/* We better avoid mixing slashes and backslashes and prefer
|
||
backslashes. There is usual no problem with mixing them, however
|
||
a very few W32 API calls can't grok plain slashes. Printing
|
||
filenames with mixed slashes also looks a bit strange. */
|
||
if (strchr (name, '\\'))
|
||
{
|
||
for (p=name; *p; p++)
|
||
if (*p == '/')
|
||
*p = '\\';
|
||
}
|
||
#endif /*HAVE_DRIVE_LETTERS*/
|
||
return name;
|
||
}
|
||
|
||
|
||
/* Compare whether the filenames are identical. This is a
|
||
special version of strcmp() taking the semantics of filenames in
|
||
account. Note that this function works only on the supplied names
|
||
without considereing any context like the current directory. See
|
||
also same_file_p(). */
|
||
int
|
||
compare_filenames (const char *a, const char *b)
|
||
{
|
||
#ifdef HAVE_DRIVE_LETTERS
|
||
for ( ; *a && *b; a++, b++ )
|
||
{
|
||
if (*a != *b
|
||
&& (toupper (*(const unsigned char*)a)
|
||
!= toupper (*(const unsigned char*)b) )
|
||
&& !((*a == '/' && *b == '\\') || (*a == '\\' && *b == '/')))
|
||
break;
|
||
}
|
||
if ((*a == '/' && *b == '\\') || (*a == '\\' && *b == '/'))
|
||
return 0;
|
||
else
|
||
return (toupper (*(const unsigned char*)a)
|
||
- toupper (*(const unsigned char*)b));
|
||
#else
|
||
return strcmp(a,b);
|
||
#endif
|
||
}
|
||
|
||
|
||
/* Convert 2 hex characters at S to a byte value. Return this value
|
||
or -1 if there is an error. */
|
||
int
|
||
hextobyte (const char *s)
|
||
{
|
||
int c;
|
||
|
||
if ( *s >= '0' && *s <= '9' )
|
||
c = 16 * (*s - '0');
|
||
else if ( *s >= 'A' && *s <= 'F' )
|
||
c = 16 * (10 + *s - 'A');
|
||
else if ( *s >= 'a' && *s <= 'f' )
|
||
c = 16 * (10 + *s - 'a');
|
||
else
|
||
return -1;
|
||
s++;
|
||
if ( *s >= '0' && *s <= '9' )
|
||
c += *s - '0';
|
||
else if ( *s >= 'A' && *s <= 'F' )
|
||
c += 10 + *s - 'A';
|
||
else if ( *s >= 'a' && *s <= 'f' )
|
||
c += 10 + *s - 'a';
|
||
else
|
||
return -1;
|
||
return c;
|
||
}
|
||
|
||
|
||
/* Print a BUFFER to stream FP while replacing all control characters
|
||
and the characters DELIM and DELIM2 with standard C escape
|
||
sequences. Returns the number of characters printed. */
|
||
size_t
|
||
print_sanitized_buffer2 (FILE *fp, const void *buffer, size_t length,
|
||
int delim, int delim2)
|
||
{
|
||
const unsigned char *p = buffer;
|
||
size_t count = 0;
|
||
|
||
for (; length; length--, p++, count++)
|
||
{
|
||
/* Fixme: Check whether *p < 0xa0 is correct for utf8 encoding. */
|
||
if (*p < 0x20
|
||
|| (*p >= 0x7f && *p < 0xa0)
|
||
|| *p == delim
|
||
|| *p == delim2
|
||
|| ((delim || delim2) && *p=='\\'))
|
||
{
|
||
putc ('\\', fp);
|
||
count++;
|
||
if (*p == '\n')
|
||
{
|
||
putc ('n', fp);
|
||
count++;
|
||
}
|
||
else if (*p == '\r')
|
||
{
|
||
putc ('r', fp);
|
||
count++;
|
||
}
|
||
else if (*p == '\f')
|
||
{
|
||
putc ('f', fp);
|
||
count++;
|
||
}
|
||
else if (*p == '\v')
|
||
{
|
||
putc ('v', fp);
|
||
count++;
|
||
}
|
||
else if (*p == '\b')
|
||
{
|
||
putc ('b', fp);
|
||
count++;
|
||
}
|
||
else if (!*p)
|
||
{
|
||
putc('0', fp);
|
||
count++;
|
||
}
|
||
else
|
||
{
|
||
fprintf (fp, "x%02x", *p);
|
||
count += 3;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
putc (*p, fp);
|
||
count++;
|
||
}
|
||
}
|
||
|
||
return count;
|
||
}
|
||
|
||
/* Same as print_sanitized_buffer2 but with just one delimiter. */
|
||
size_t
|
||
print_sanitized_buffer (FILE *fp, const void *buffer, size_t length,
|
||
int delim)
|
||
{
|
||
return print_sanitized_buffer2 (fp, buffer, length, delim, 0);
|
||
}
|
||
|
||
|
||
size_t
|
||
print_sanitized_utf8_buffer (FILE *fp, const void *buffer,
|
||
size_t length, int delim)
|
||
{
|
||
const char *p = buffer;
|
||
size_t i;
|
||
|
||
/* We can handle plain ascii simpler, so check for it first. */
|
||
for (i=0; i < length; i++ )
|
||
{
|
||
if ( (p[i] & 0x80) )
|
||
break;
|
||
}
|
||
if (i < length)
|
||
{
|
||
char *buf = utf8_to_native (p, length, delim);
|
||
/*(utf8 conversion already does the control character quoting)*/
|
||
i = strlen (buf);
|
||
fputs (buf, fp);
|
||
jnlib_free (buf);
|
||
return i;
|
||
}
|
||
else
|
||
return print_sanitized_buffer (fp, p, length, delim);
|
||
}
|
||
|
||
|
||
size_t
|
||
print_sanitized_string2 (FILE *fp, const char *string, int delim, int delim2)
|
||
{
|
||
return string? print_sanitized_buffer2 (fp, string, strlen (string),
|
||
delim, delim2):0;
|
||
}
|
||
|
||
size_t
|
||
print_sanitized_string (FILE *fp, const char *string, int delim)
|
||
{
|
||
return string? print_sanitized_buffer (fp, string, strlen (string), delim):0;
|
||
}
|
||
|
||
size_t
|
||
print_sanitized_utf8_string (FILE *fp, const char *string, int delim)
|
||
{
|
||
return string? print_sanitized_utf8_buffer (fp,
|
||
string, strlen (string),
|
||
delim) : 0;
|
||
}
|
||
|
||
/* Create a string from the buffer P_ARG of length N which is suitable for
|
||
printing. Caller must release the created string using xfree. */
|
||
char *
|
||
sanitize_buffer (const void *p_arg, size_t n, int delim)
|
||
{
|
||
const unsigned char *p = p_arg;
|
||
size_t save_n, buflen;
|
||
const unsigned char *save_p;
|
||
char *buffer, *d;
|
||
|
||
/* First count length. */
|
||
for (save_n = n, save_p = p, buflen=1 ; n; n--, p++ )
|
||
{
|
||
if ( *p < 0x20 || *p == 0x7f || *p == delim || (delim && *p=='\\'))
|
||
{
|
||
if ( *p=='\n' || *p=='\r' || *p=='\f'
|
||
|| *p=='\v' || *p=='\b' || !*p )
|
||
buflen += 2;
|
||
else
|
||
buflen += 5;
|
||
}
|
||
else
|
||
buflen++;
|
||
}
|
||
p = save_p;
|
||
n = save_n;
|
||
/* And now make the string */
|
||
d = buffer = jnlib_xmalloc( buflen );
|
||
for ( ; n; n--, p++ )
|
||
{
|
||
if (*p < 0x20 || *p == 0x7f || *p == delim || (delim && *p=='\\')) {
|
||
*d++ = '\\';
|
||
if( *p == '\n' )
|
||
*d++ = 'n';
|
||
else if( *p == '\r' )
|
||
*d++ = 'r';
|
||
else if( *p == '\f' )
|
||
*d++ = 'f';
|
||
else if( *p == '\v' )
|
||
*d++ = 'v';
|
||
else if( *p == '\b' )
|
||
*d++ = 'b';
|
||
else if( !*p )
|
||
*d++ = '0';
|
||
else {
|
||
sprintf(d, "x%02x", *p );
|
||
d += 3;
|
||
}
|
||
}
|
||
else
|
||
*d++ = *p;
|
||
}
|
||
*d = 0;
|
||
return buffer;
|
||
}
|
||
|
||
|
||
/* Given a string containing an UTF-8 encoded text, return the number
|
||
of characters in this string. It differs from strlen in that it
|
||
only counts complete UTF-8 characters. Note, that this function
|
||
does not take combined characters into account. */
|
||
size_t
|
||
utf8_charcount (const char *s)
|
||
{
|
||
size_t n;
|
||
|
||
for (n=0; *s; s++)
|
||
if ( (*s&0xc0) != 0x80 ) /* Exclude continuation bytes: 10xxxxxx */
|
||
n++;
|
||
|
||
return n;
|
||
}
|
||
|
||
|
||
/****************************************************
|
||
********** W32 specific functions ****************
|
||
****************************************************/
|
||
|
||
#ifdef HAVE_W32_SYSTEM
|
||
const char *
|
||
w32_strerror (int ec)
|
||
{
|
||
static char strerr[256];
|
||
|
||
if (ec == -1)
|
||
ec = (int)GetLastError ();
|
||
FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, ec,
|
||
MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
|
||
strerr, DIM (strerr)-1, NULL);
|
||
return strerr;
|
||
}
|
||
#endif /*HAVE_W32_SYSTEM*/
|
||
|
||
|
||
/****************************************************
|
||
******** Locale insensitive ctype functions ********
|
||
****************************************************/
|
||
/* FIXME: replace them by a table lookup and macros */
|
||
int
|
||
ascii_isupper (int c)
|
||
{
|
||
return c >= 'A' && c <= 'Z';
|
||
}
|
||
|
||
int
|
||
ascii_islower (int c)
|
||
{
|
||
return c >= 'a' && c <= 'z';
|
||
}
|
||
|
||
int
|
||
ascii_toupper (int c)
|
||
{
|
||
if (c >= 'a' && c <= 'z')
|
||
c &= ~0x20;
|
||
return c;
|
||
}
|
||
|
||
int
|
||
ascii_tolower (int c)
|
||
{
|
||
if (c >= 'A' && c <= 'Z')
|
||
c |= 0x20;
|
||
return c;
|
||
}
|
||
|
||
|
||
int
|
||
ascii_strcasecmp( const char *a, const char *b )
|
||
{
|
||
if (a == b)
|
||
return 0;
|
||
|
||
for (; *a && *b; a++, b++) {
|
||
if (*a != *b && ascii_toupper(*a) != ascii_toupper(*b))
|
||
break;
|
||
}
|
||
return *a == *b? 0 : (ascii_toupper (*a) - ascii_toupper (*b));
|
||
}
|
||
|
||
int
|
||
ascii_strncasecmp (const char *a, const char *b, size_t n)
|
||
{
|
||
const unsigned char *p1 = (const unsigned char *)a;
|
||
const unsigned char *p2 = (const unsigned char *)b;
|
||
unsigned char c1, c2;
|
||
|
||
if (p1 == p2 || !n )
|
||
return 0;
|
||
|
||
do
|
||
{
|
||
c1 = ascii_tolower (*p1);
|
||
c2 = ascii_tolower (*p2);
|
||
|
||
if ( !--n || c1 == '\0')
|
||
break;
|
||
|
||
++p1;
|
||
++p2;
|
||
}
|
||
while (c1 == c2);
|
||
|
||
return c1 - c2;
|
||
}
|
||
|
||
|
||
int
|
||
ascii_memcasecmp (const void *a_arg, const void *b_arg, size_t n )
|
||
{
|
||
const char *a = a_arg;
|
||
const char *b = b_arg;
|
||
|
||
if (a == b)
|
||
return 0;
|
||
for ( ; n; n--, a++, b++ )
|
||
{
|
||
if( *a != *b && ascii_toupper (*a) != ascii_toupper (*b) )
|
||
return *a == *b? 0 : (ascii_toupper (*a) - ascii_toupper (*b));
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
ascii_strcmp( const char *a, const char *b )
|
||
{
|
||
if (a == b)
|
||
return 0;
|
||
|
||
for (; *a && *b; a++, b++) {
|
||
if (*a != *b )
|
||
break;
|
||
}
|
||
return *a == *b? 0 : (*(signed char *)a - *(signed char *)b);
|
||
}
|
||
|
||
|
||
void *
|
||
ascii_memcasemem (const void *haystack, size_t nhaystack,
|
||
const void *needle, size_t nneedle)
|
||
{
|
||
|
||
if (!nneedle)
|
||
return (void*)haystack; /* finding an empty needle is really easy */
|
||
if (nneedle <= nhaystack)
|
||
{
|
||
const char *a = haystack;
|
||
const char *b = a + nhaystack - nneedle;
|
||
|
||
for (; a <= b; a++)
|
||
{
|
||
if ( !ascii_memcasecmp (a, needle, nneedle) )
|
||
return (void *)a;
|
||
}
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
/*********************************************
|
||
********** missing string functions *********
|
||
*********************************************/
|
||
|
||
#ifndef HAVE_STPCPY
|
||
char *
|
||
stpcpy(char *a,const char *b)
|
||
{
|
||
while( *b )
|
||
*a++ = *b++;
|
||
*a = 0;
|
||
|
||
return (char*)a;
|
||
}
|
||
#endif
|
||
|
||
#ifndef HAVE_STRSEP
|
||
/* Code taken from glibc-2.2.1/sysdeps/generic/strsep.c. */
|
||
char *
|
||
strsep (char **stringp, const char *delim)
|
||
{
|
||
char *begin, *end;
|
||
|
||
begin = *stringp;
|
||
if (begin == NULL)
|
||
return NULL;
|
||
|
||
/* A frequent case is when the delimiter string contains only one
|
||
character. Here we don't need to call the expensive `strpbrk'
|
||
function and instead work using `strchr'. */
|
||
if (delim[0] == '\0' || delim[1] == '\0')
|
||
{
|
||
char ch = delim[0];
|
||
|
||
if (ch == '\0')
|
||
end = NULL;
|
||
else
|
||
{
|
||
if (*begin == ch)
|
||
end = begin;
|
||
else if (*begin == '\0')
|
||
end = NULL;
|
||
else
|
||
end = strchr (begin + 1, ch);
|
||
}
|
||
}
|
||
else
|
||
/* Find the end of the token. */
|
||
end = strpbrk (begin, delim);
|
||
|
||
if (end)
|
||
{
|
||
/* Terminate the token and set *STRINGP past NUL character. */
|
||
*end++ = '\0';
|
||
*stringp = end;
|
||
}
|
||
else
|
||
/* No more delimiters; this is the last token. */
|
||
*stringp = NULL;
|
||
|
||
return begin;
|
||
}
|
||
#endif /*HAVE_STRSEP*/
|
||
|
||
|
||
#ifndef HAVE_STRLWR
|
||
char *
|
||
strlwr(char *s)
|
||
{
|
||
char *p;
|
||
for(p=s; *p; p++ )
|
||
*p = tolower(*p);
|
||
return s;
|
||
}
|
||
#endif
|
||
|
||
|
||
#ifndef HAVE_STRCASECMP
|
||
int
|
||
strcasecmp( const char *a, const char *b )
|
||
{
|
||
for( ; *a && *b; a++, b++ ) {
|
||
if( *a != *b && toupper(*a) != toupper(*b) )
|
||
break;
|
||
}
|
||
return *(const byte*)a - *(const byte*)b;
|
||
}
|
||
#endif
|
||
|
||
|
||
/****************
|
||
* mingw32/cpd has a memicmp()
|
||
*/
|
||
#ifndef HAVE_MEMICMP
|
||
int
|
||
memicmp( const char *a, const char *b, size_t n )
|
||
{
|
||
for( ; n; n--, a++, b++ )
|
||
if( *a != *b && toupper(*(const byte*)a) != toupper(*(const byte*)b) )
|
||
return *(const byte *)a - *(const byte*)b;
|
||
return 0;
|
||
}
|
||
#endif
|
||
|
||
|
||
#ifndef HAVE_MEMRCHR
|
||
void *
|
||
memrchr (const void *buffer, int c, size_t n)
|
||
{
|
||
const unsigned char *p = buffer;
|
||
|
||
for (p += n; n ; n--)
|
||
if (*--p == c)
|
||
return (void *)p;
|
||
return NULL;
|
||
}
|
||
#endif /*HAVE_MEMRCHR*/
|
||
|
||
|
||
/* Percent-escape the string STR by replacing colons with '%3a'. If
|
||
EXTRA is not NULL all characters in EXTRA are also escaped. */
|
||
static char *
|
||
do_percent_escape (const char *str, const char *extra, int die)
|
||
{
|
||
int i, j;
|
||
char *ptr;
|
||
|
||
if (!str)
|
||
return NULL;
|
||
|
||
for (i=j=0; str[i]; i++)
|
||
if (str[i] == ':' || str[i] == '%' || (extra && strchr (extra, str[i])))
|
||
j++;
|
||
if (die)
|
||
ptr = jnlib_xmalloc (i + 2 * j + 1);
|
||
else
|
||
{
|
||
ptr = jnlib_malloc (i + 2 * j + 1);
|
||
if (!ptr)
|
||
return NULL;
|
||
}
|
||
i = 0;
|
||
while (*str)
|
||
{
|
||
if (*str == ':')
|
||
{
|
||
ptr[i++] = '%';
|
||
ptr[i++] = '3';
|
||
ptr[i++] = 'a';
|
||
}
|
||
else if (*str == '%')
|
||
{
|
||
ptr[i++] = '%';
|
||
ptr[i++] = '2';
|
||
ptr[i++] = '5';
|
||
}
|
||
else if (extra && strchr (extra, *str))
|
||
{
|
||
ptr[i++] = '%';
|
||
ptr[i++] = tohex_lower ((*str>>4)&15);
|
||
ptr[i++] = tohex_lower (*str&15);
|
||
}
|
||
else
|
||
ptr[i++] = *str;
|
||
str++;
|
||
}
|
||
ptr[i] = '\0';
|
||
|
||
return ptr;
|
||
}
|
||
|
||
/* Percent-escape the string STR by replacing colons with '%3a'. If
|
||
EXTRA is not NULL all characters in EXTRA are also escaped. */
|
||
char *
|
||
percent_escape (const char *str, const char *extra)
|
||
{
|
||
return do_percent_escape (str, extra, 1);
|
||
}
|
||
|
||
/* Same as percent_escape but return NULL instead of exiting on memory
|
||
error. */
|
||
char *
|
||
try_percent_escape (const char *str, const char *extra)
|
||
{
|
||
return do_percent_escape (str, extra, 0);
|
||
}
|