direwolf/external/misc/strtok_r.c
Davide Gerhard a1c16a67ef
cmake: new build tool
this step unify the builing system for all platforms (windows, linux,
osx and *BSD)

* Requirements:

  - gcc/clang (C/C++ compiler) (in debian build-essential)
  - cmake (in debian cmake)
  - git if you build from source (in debian git)
  - posix threads

** Requirements on *BSD/macOS:

  - portaudio

** Optional Requirements:

  - gpsd (in debian libgps-dev)
  - libhamlib (in debian libhamlib-dev)

** Optional Requirements in Linux

  - udev (in debian libudev-dev)
  - alsa (in debian libasound2-dev)

* Main changes:

  - version is now set only on CMakeLists.txt and automatically used
    on the code
  - cpu flags are auto-discovered in the default build and it works
    on gcc/clang/msvc on x86/x86_64/arm; you can force cpu flags with
    -DFORCE_SSE=1 for example (see CMakeLists.txt on root)
  - use a more "complex" tag on generic.conf to facilitate parsing
    by cmake (not more platform dependent). Now it is %C% or %R% for
    example
  - target `tocalls-symbols` is now called `data-update`
  - created debian/ directory to contains files to use debuild

* Example to build:

mkdir build && cd build
cmake ..
make
make install
make install-conf

then you have the binary files on src/ and in the system directory

* CMake options (see the head of CMakeLists.txt)

  - FORCE_SSE force sse instruction
  - FORCE_SSSE3 force ssse3 instruction
  - FORCE_SSE41 force ssse4.1 instruction
  - OPTIONAL_TEST compile optional test (might be broken)
  - BUILD_TESTING enable tests (ctest framework)
  - CMAKE_INSTALL_PREFIX if you want to change your install path
    prefix

for example:

  cmake .. -DOPTIONAL_TEST=ON
2019-11-09 08:26:33 +01:00

103 lines
2.8 KiB
C

/*
* Copyright (c) 1988 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <string.h>
#define _DEFUN(name,arglist,args) name(args)
#define _AND ,
char *
_DEFUN (__strtok_r, (s, delim, lasts, skip_leading_delim),
register char *s _AND
register const char *delim _AND
char **lasts _AND
int skip_leading_delim)
{
register char *spanp;
register int c, sc;
char *tok;
if (s == NULL && (s = *lasts) == NULL)
return (NULL);
/*
* Skip (span) leading delimiters (s += strspn(s, delim), sort of).
*/
cont:
c = *s++;
for (spanp = (char *)delim; (sc = *spanp++) != 0;) {
if (c == sc) {
if (skip_leading_delim) {
goto cont;
}
else {
*lasts = s;
s[-1] = 0;
return (s - 1);
}
}
}
if (c == 0) { /* no non-delimiter characters */
*lasts = NULL;
return (NULL);
}
tok = s - 1;
/*
* Scan token (scan for delimiters: s += strcspn(s, delim), sort of).
* Note that delim must have one NUL; we stop if we see that, too.
*/
for (;;) {
c = *s++;
spanp = (char *)delim;
do {
if ((sc = *spanp++) == c) {
if (c == 0)
s = NULL;
else
s[-1] = 0;
*lasts = s;
return (tok);
}
} while (sc != 0);
}
/* NOTREACHED */
}
char *
_DEFUN (strtok_r, (s, delim, lasts),
register char *s _AND
register const char *delim _AND
char **lasts)
{
return __strtok_r (s, delim, lasts, 1);
}