From fdecb56cbfcafe5b770c4181133655b89973f41e Mon Sep 17 00:00:00 2001 From: Yang Tse Date: Mon, 19 Sep 2011 18:18:17 +0200 Subject: curl tool: reviewed code moved to tool_*.[ch] files --- src/tool_doswin.c | 202 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 202 insertions(+) create mode 100644 src/tool_doswin.c (limited to 'src/tool_doswin.c') diff --git a/src/tool_doswin.c b/src/tool_doswin.c new file mode 100644 index 000000000..2b900e161 --- /dev/null +++ b/src/tool_doswin.c @@ -0,0 +1,202 @@ +/*************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * Copyright (C) 1998 - 2011, Daniel Stenberg, , et al. + * + * This software is licensed as described in the file COPYING, which + * you should have received as part of this distribution. The terms + * are also available at http://curl.haxx.se/docs/copyright.html. + * + * You may opt to use, copy, modify, merge, publish, distribute and/or sell + * copies of the Software, and permit persons to whom the Software is + * furnished to do so, under the terms of the COPYING file. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ***************************************************************************/ +#include "setup.h" + +#if defined(MSDOS) || defined(WIN32) + +#if defined(HAVE_LIBGEN_H) && defined(HAVE_BASENAME) +# include +#endif + +#include "tool_bname.h" +#include "tool_doswin.h" + +#include "memdebug.h" /* keep this as LAST include */ + +#ifdef WIN32 +# undef PATH_MAX +# define PATH_MAX MAX_PATH +#endif + +#ifndef S_ISCHR +# ifdef S_IFCHR +# define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) +# else +# define S_ISCHR(m) (0) /* cannot tell if file is a device */ +# endif +#endif + +#ifdef WIN32 +# define _use_lfn(f) (0, 1) /* long file names always available */ +#elif !defined(__DJGPP__) || (__DJGPP__ < 2) /* DJGPP 2.0 has _use_lfn() */ +# define _use_lfn(f) (1, 0) /* long file names never available */ +#endif + +static const char *msdosify (const char *file_name); +static char *rename_if_dos_device_name (char *file_name); + +/* + * sanitize_dos_name: returns a newly allocated string holding a + * valid file name which will be a transformation of given argument + * in case this wasn't already a valid file name. + * + * This function takes ownership of given argument, free'ing it before + * returning. Caller is responsible of free'ing returned string. Upon + * out of memory condition function returns NULL. + */ + +char *sanitize_dos_name(char *file_name) +{ + char new_name[PATH_MAX]; + + if(!file_name) + return NULL; + + if(strlen(file_name) >= PATH_MAX) + file_name[PATH_MAX-1] = '\0'; /* truncate it */ + + strcpy(new_name, msdosify(file_name)); + + free(file_name); + + return strdup(rename_if_dos_device_name(new_name)); +} + +/* The following functions are taken with modification from the DJGPP + * port of tar 1.12. They use algorithms originally from DJTAR. */ + +static const char *msdosify (const char *file_name) +{ + static char dos_name[PATH_MAX]; + static const char illegal_chars_dos[] = ".+, ;=[]" /* illegal in DOS */ + "|<>\\\":?*"; /* illegal in DOS & W95 */ + static const char *illegal_chars_w95 = &illegal_chars_dos[8]; + int idx, dot_idx; + const char *s = file_name; + char *d = dos_name; + const char *const dlimit = dos_name + sizeof(dos_name) - 1; + const char *illegal_aliens = illegal_chars_dos; + size_t len = sizeof(illegal_chars_dos) - 1; + + /* Support for Windows 9X VFAT systems, when available. */ + if(_use_lfn(file_name)) { + illegal_aliens = illegal_chars_w95; + len -= (illegal_chars_w95 - illegal_chars_dos); + } + + /* Get past the drive letter, if any. */ + if(s[0] >= 'A' && s[0] <= 'z' && s[1] == ':') { + *d++ = *s++; + *d++ = *s++; + } + + for(idx = 0, dot_idx = -1; *s && d < dlimit; s++, d++) { + if(memchr(illegal_aliens, *s, len)) { + /* Dots are special: DOS doesn't allow them as the leading character, + and a file name cannot have more than a single dot. We leave the + first non-leading dot alone, unless it comes too close to the + beginning of the name: we want sh.lex.c to become sh_lex.c, not + sh.lex-c. */ + if(*s == '.') { + if(idx == 0 && (s[1] == '/' || (s[1] == '.' && s[2] == '/'))) { + /* Copy "./" and "../" verbatim. */ + *d++ = *s++; + if(*s == '.') + *d++ = *s++; + *d = *s; + } + else if(idx == 0) + *d = '_'; + else if(dot_idx >= 0) { + if(dot_idx < 5) { /* 5 is a heuristic ad-hoc'ery */ + d[dot_idx - idx] = '_'; /* replace previous dot */ + *d = '.'; + } + else + *d = '-'; + } + else + *d = '.'; + + if(*s == '.') + dot_idx = idx; + } + else if(*s == '+' && s[1] == '+') { + if(idx - 2 == dot_idx) { /* .c++, .h++ etc. */ + *d++ = 'x'; + *d = 'x'; + } + else { + /* libg++ etc. */ + memcpy (d, "plus", 4); + d += 3; + } + s++; + idx++; + } + else + *d = '_'; + } + else + *d = *s; + if(*s == '/') { + idx = 0; + dot_idx = -1; + } + else + idx++; + } + + *d = '\0'; + return dos_name; +} + +static char *rename_if_dos_device_name (char *file_name) +{ + /* We could have a file whose name is a device on MS-DOS. Trying to + * retrieve such a file would fail at best and wedge us at worst. We need + * to rename such files. */ + char *base; + struct_stat st_buf; + char fname[PATH_MAX]; + + strncpy(fname, file_name, PATH_MAX-1); + fname[PATH_MAX-1] = '\0'; + base = basename(fname); + if(((stat(base, &st_buf)) == 0) && (S_ISCHR(st_buf.st_mode))) { + size_t blen = strlen(base); + + if(strlen(fname) >= PATH_MAX-1) { + /* Make room for the '_' */ + blen--; + base[blen] = '\0'; + } + /* Prepend a '_'. */ + memmove(base + 1, base, blen + 1); + base[0] = '_'; + strcpy(file_name, fname); + } + return file_name; +} + +#endif /* MSDOS || WIN32 */ + -- cgit v1.2.3