Complete revamp of the pathexec functions

- pathexec_run is now called exec_ae
    a for provided file name (default: argv[0])
    e for provided envp (default: environ)
- pathexec is now called mexec. m for merge environment. Option letters are:
    a for provided file name (default: argv[0])
    e for provided envp (default: environ)
    f for provided envp *and* length of the envp
    m for provided modif string plus its length (the length is always needed
because the modifs are null-terminated)
    n for provided modif string, length *and* number of modifs
- functions have a foo0 version for _exit(0) when argv[0] is null
- functions have a xfoo version to die if the exec fails
- and a xfoo0
- Compatibility #defines and #includes are there until the next major bump

1 files changed, 0 insertions, 26 deletions

diff --git a/src/libstddjb/env_merge.c b/src/libstddjb/env_merge.c
deleted file mode 100644
index 5543e08..0000000
--- a/src/libstddjb/env_merge.c
+++ /dev/null
@@ -1,26 +0,0 @@
-/* ISC license. */
-
-#include <string.h>
-#include <errno.h>
-#include <skalibs/bytestr.h>
-#include <skalibs/env.h>
-
-size_t env_merge (char const **v, size_t vmax, char const *const *envp, size_t envlen, char const *modifs, size_t modiflen)
-{
-  size_t n = byte_count(modifs, modiflen, '\0') ;
-  size_t vlen = envlen ;
-  size_t i = 0 ;
-  if (envlen + n + 1 > vmax) return (errno = ENAMETOOLONG, 0) ;
-  for (; i < envlen ; i++) v[i] = envp[i] ;
-  for (i = 0 ; i < modiflen ; i += strlen(modifs + i) + 1)
-  {
-    size_t split = str_chr(modifs + i, '=') ;
-    size_t j = 0 ;
-    for (; j < vlen ; j++)
-      if (!strncmp(modifs + i, v[j], split) && (v[j][split] == '=')) break ;
-    if (j < vlen) v[j] = v[--vlen] ;
-    if (modifs[i + split]) v[vlen++] = modifs + i ;
-  }
-  v[vlen++] = 0 ;
-  return vlen ;
-}