Mercurial > vim
diff src/eval.c @ 17966:46f95606b9ec v8.1.1979
patch 8.1.1979: code for handling file names is spread out
Commit: https://github.com/vim/vim/commit/b005cd80cfda591be95146024d9b97eef383500f
Author: Bram Moolenaar <Bram@vim.org>
Date: Wed Sep 4 15:54:55 2019 +0200
patch 8.1.1979: code for handling file names is spread out
Problem: Code for handling file names is spread out.
Solution: Move code to new filepath.c file. Graduate FEAT_MODIFY_FNAME.
author | Bram Moolenaar <Bram@vim.org> |
---|---|
date | Wed, 04 Sep 2019 16:00:04 +0200 |
parents | 6d4d3bce365d |
children | a6d218f99ff7 |
line wrap: on
line diff
--- a/src/eval.c +++ b/src/eval.c @@ -6387,650 +6387,7 @@ typval_tostring(typval_T *arg) return ret; } -#endif /* FEAT_EVAL */ - -#if defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) || defined(PROTO) - -#ifdef MSWIN -/* - * Functions for ":8" filename modifier: get 8.3 version of a filename. - */ - -/* - * Get the short path (8.3) for the filename in "fnamep". - * Only works for a valid file name. - * When the path gets longer "fnamep" is changed and the allocated buffer - * is put in "bufp". - * *fnamelen is the length of "fnamep" and set to 0 for a nonexistent path. - * Returns OK on success, FAIL on failure. - */ - static int -get_short_pathname(char_u **fnamep, char_u **bufp, int *fnamelen) -{ - int l, len; - char_u *newbuf; - - len = *fnamelen; - l = GetShortPathName((LPSTR)*fnamep, (LPSTR)*fnamep, len); - if (l > len - 1) - { - /* If that doesn't work (not enough space), then save the string - * and try again with a new buffer big enough. */ - newbuf = vim_strnsave(*fnamep, l); - if (newbuf == NULL) - return FAIL; - - vim_free(*bufp); - *fnamep = *bufp = newbuf; - - /* Really should always succeed, as the buffer is big enough. */ - l = GetShortPathName((LPSTR)*fnamep, (LPSTR)*fnamep, l+1); - } - - *fnamelen = l; - return OK; -} - -/* - * Get the short path (8.3) for the filename in "fname". The converted - * path is returned in "bufp". - * - * Some of the directories specified in "fname" may not exist. This function - * will shorten the existing directories at the beginning of the path and then - * append the remaining non-existing path. - * - * fname - Pointer to the filename to shorten. On return, contains the - * pointer to the shortened pathname - * bufp - Pointer to an allocated buffer for the filename. - * fnamelen - Length of the filename pointed to by fname - * - * Returns OK on success (or nothing done) and FAIL on failure (out of memory). - */ - static int -shortpath_for_invalid_fname( - char_u **fname, - char_u **bufp, - int *fnamelen) -{ - char_u *short_fname, *save_fname, *pbuf_unused; - char_u *endp, *save_endp; - char_u ch; - int old_len, len; - int new_len, sfx_len; - int retval = OK; - - /* Make a copy */ - old_len = *fnamelen; - save_fname = vim_strnsave(*fname, old_len); - pbuf_unused = NULL; - short_fname = NULL; - - endp = save_fname + old_len - 1; /* Find the end of the copy */ - save_endp = endp; - - /* - * Try shortening the supplied path till it succeeds by removing one - * directory at a time from the tail of the path. - */ - len = 0; - for (;;) - { - /* go back one path-separator */ - while (endp > save_fname && !after_pathsep(save_fname, endp + 1)) - --endp; - if (endp <= save_fname) - break; /* processed the complete path */ - - /* - * Replace the path separator with a NUL and try to shorten the - * resulting path. - */ - ch = *endp; - *endp = 0; - short_fname = save_fname; - len = (int)STRLEN(short_fname) + 1; - if (get_short_pathname(&short_fname, &pbuf_unused, &len) == FAIL) - { - retval = FAIL; - goto theend; - } - *endp = ch; /* preserve the string */ - - if (len > 0) - break; /* successfully shortened the path */ - - /* failed to shorten the path. Skip the path separator */ - --endp; - } - - if (len > 0) - { - /* - * Succeeded in shortening the path. Now concatenate the shortened - * path with the remaining path at the tail. - */ - - /* Compute the length of the new path. */ - sfx_len = (int)(save_endp - endp) + 1; - new_len = len + sfx_len; - - *fnamelen = new_len; - vim_free(*bufp); - if (new_len > old_len) - { - /* There is not enough space in the currently allocated string, - * copy it to a buffer big enough. */ - *fname = *bufp = vim_strnsave(short_fname, new_len); - if (*fname == NULL) - { - retval = FAIL; - goto theend; - } - } - else - { - /* Transfer short_fname to the main buffer (it's big enough), - * unless get_short_pathname() did its work in-place. */ - *fname = *bufp = save_fname; - if (short_fname != save_fname) - vim_strncpy(save_fname, short_fname, len); - save_fname = NULL; - } - - /* concat the not-shortened part of the path */ - vim_strncpy(*fname + len, endp, sfx_len); - (*fname)[new_len] = NUL; - } - -theend: - vim_free(pbuf_unused); - vim_free(save_fname); - - return retval; -} - -/* - * Get a pathname for a partial path. - * Returns OK for success, FAIL for failure. - */ - static int -shortpath_for_partial( - char_u **fnamep, - char_u **bufp, - int *fnamelen) -{ - int sepcount, len, tflen; - char_u *p; - char_u *pbuf, *tfname; - int hasTilde; - - /* Count up the path separators from the RHS.. so we know which part - * of the path to return. */ - sepcount = 0; - for (p = *fnamep; p < *fnamep + *fnamelen; MB_PTR_ADV(p)) - if (vim_ispathsep(*p)) - ++sepcount; - - /* Need full path first (use expand_env() to remove a "~/") */ - hasTilde = (**fnamep == '~'); - if (hasTilde) - pbuf = tfname = expand_env_save(*fnamep); - else - pbuf = tfname = FullName_save(*fnamep, FALSE); - - len = tflen = (int)STRLEN(tfname); - - if (get_short_pathname(&tfname, &pbuf, &len) == FAIL) - return FAIL; - - if (len == 0) - { - /* Don't have a valid filename, so shorten the rest of the - * path if we can. This CAN give us invalid 8.3 filenames, but - * there's not a lot of point in guessing what it might be. - */ - len = tflen; - if (shortpath_for_invalid_fname(&tfname, &pbuf, &len) == FAIL) - return FAIL; - } - - /* Count the paths backward to find the beginning of the desired string. */ - for (p = tfname + len - 1; p >= tfname; --p) - { - if (has_mbyte) - p -= mb_head_off(tfname, p); - if (vim_ispathsep(*p)) - { - if (sepcount == 0 || (hasTilde && sepcount == 1)) - break; - else - sepcount --; - } - } - if (hasTilde) - { - --p; - if (p >= tfname) - *p = '~'; - else - return FAIL; - } - else - ++p; - - /* Copy in the string - p indexes into tfname - allocated at pbuf */ - vim_free(*bufp); - *fnamelen = (int)STRLEN(p); - *bufp = pbuf; - *fnamep = p; - - return OK; -} -#endif // MSWIN - -/* - * Adjust a filename, according to a string of modifiers. - * *fnamep must be NUL terminated when called. When returning, the length is - * determined by *fnamelen. - * Returns VALID_ flags or -1 for failure. - * When there is an error, *fnamep is set to NULL. - */ - int -modify_fname( - char_u *src, // string with modifiers - int tilde_file, // "~" is a file name, not $HOME - int *usedlen, // characters after src that are used - char_u **fnamep, // file name so far - char_u **bufp, // buffer for allocated file name or NULL - int *fnamelen) // length of fnamep -{ - int valid = 0; - char_u *tail; - char_u *s, *p, *pbuf; - char_u dirname[MAXPATHL]; - int c; - int has_fullname = 0; -#ifdef MSWIN - char_u *fname_start = *fnamep; - int has_shortname = 0; -#endif - -repeat: - /* ":p" - full path/file_name */ - if (src[*usedlen] == ':' && src[*usedlen + 1] == 'p') - { - has_fullname = 1; - - valid |= VALID_PATH; - *usedlen += 2; - - /* Expand "~/path" for all systems and "~user/path" for Unix and VMS */ - if ((*fnamep)[0] == '~' -#if !defined(UNIX) && !(defined(VMS) && defined(USER_HOME)) - && ((*fnamep)[1] == '/' -# ifdef BACKSLASH_IN_FILENAME - || (*fnamep)[1] == '\\' -# endif - || (*fnamep)[1] == NUL) -#endif - && !(tilde_file && (*fnamep)[1] == NUL) - ) - { - *fnamep = expand_env_save(*fnamep); - vim_free(*bufp); /* free any allocated file name */ - *bufp = *fnamep; - if (*fnamep == NULL) - return -1; - } - - /* When "/." or "/.." is used: force expansion to get rid of it. */ - for (p = *fnamep; *p != NUL; MB_PTR_ADV(p)) - { - if (vim_ispathsep(*p) - && p[1] == '.' - && (p[2] == NUL - || vim_ispathsep(p[2]) - || (p[2] == '.' - && (p[3] == NUL || vim_ispathsep(p[3]))))) - break; - } - - /* FullName_save() is slow, don't use it when not needed. */ - if (*p != NUL || !vim_isAbsName(*fnamep)) - { - *fnamep = FullName_save(*fnamep, *p != NUL); - vim_free(*bufp); /* free any allocated file name */ - *bufp = *fnamep; - if (*fnamep == NULL) - return -1; - } - -#ifdef MSWIN -# if _WIN32_WINNT >= 0x0500 - if (vim_strchr(*fnamep, '~') != NULL) - { - // Expand 8.3 filename to full path. Needed to make sure the same - // file does not have two different names. - // Note: problem does not occur if _WIN32_WINNT < 0x0500. - WCHAR *wfname = enc_to_utf16(*fnamep, NULL); - WCHAR buf[_MAX_PATH]; - - if (wfname != NULL) - { - if (GetLongPathNameW(wfname, buf, _MAX_PATH)) - { - char_u *p = utf16_to_enc(buf, NULL); - - if (p != NULL) - { - vim_free(*bufp); // free any allocated file name - *bufp = *fnamep = p; - } - } - vim_free(wfname); - } - } -# endif -#endif - /* Append a path separator to a directory. */ - if (mch_isdir(*fnamep)) - { - /* Make room for one or two extra characters. */ - *fnamep = vim_strnsave(*fnamep, (int)STRLEN(*fnamep) + 2); - vim_free(*bufp); /* free any allocated file name */ - *bufp = *fnamep; - if (*fnamep == NULL) - return -1; - add_pathsep(*fnamep); - } - } - - /* ":." - path relative to the current directory */ - /* ":~" - path relative to the home directory */ - /* ":8" - shortname path - postponed till after */ - while (src[*usedlen] == ':' - && ((c = src[*usedlen + 1]) == '.' || c == '~' || c == '8')) - { - *usedlen += 2; - if (c == '8') - { -#ifdef MSWIN - has_shortname = 1; /* Postpone this. */ -#endif - continue; - } - pbuf = NULL; - /* Need full path first (use expand_env() to remove a "~/") */ - if (!has_fullname) - { - if (c == '.' && **fnamep == '~') - p = pbuf = expand_env_save(*fnamep); - else - p = pbuf = FullName_save(*fnamep, FALSE); - } - else - p = *fnamep; - - has_fullname = 0; - - if (p != NULL) - { - if (c == '.') - { - mch_dirname(dirname, MAXPATHL); - s = shorten_fname(p, dirname); - if (s != NULL) - { - *fnamep = s; - if (pbuf != NULL) - { - vim_free(*bufp); /* free any allocated file name */ - *bufp = pbuf; - pbuf = NULL; - } - } - } - else - { - home_replace(NULL, p, dirname, MAXPATHL, TRUE); - /* Only replace it when it starts with '~' */ - if (*dirname == '~') - { - s = vim_strsave(dirname); - if (s != NULL) - { - *fnamep = s; - vim_free(*bufp); - *bufp = s; - } - } - } - vim_free(pbuf); - } - } - - tail = gettail(*fnamep); - *fnamelen = (int)STRLEN(*fnamep); - - /* ":h" - head, remove "/file_name", can be repeated */ - /* Don't remove the first "/" or "c:\" */ - while (src[*usedlen] == ':' && src[*usedlen + 1] == 'h') - { - valid |= VALID_HEAD; - *usedlen += 2; - s = get_past_head(*fnamep); - while (tail > s && after_pathsep(s, tail)) - MB_PTR_BACK(*fnamep, tail); - *fnamelen = (int)(tail - *fnamep); -#ifdef VMS - if (*fnamelen > 0) - *fnamelen += 1; /* the path separator is part of the path */ -#endif - if (*fnamelen == 0) - { - /* Result is empty. Turn it into "." to make ":cd %:h" work. */ - p = vim_strsave((char_u *)"."); - if (p == NULL) - return -1; - vim_free(*bufp); - *bufp = *fnamep = tail = p; - *fnamelen = 1; - } - else - { - while (tail > s && !after_pathsep(s, tail)) - MB_PTR_BACK(*fnamep, tail); - } - } - - /* ":8" - shortname */ - if (src[*usedlen] == ':' && src[*usedlen + 1] == '8') - { - *usedlen += 2; -#ifdef MSWIN - has_shortname = 1; -#endif - } - -#ifdef MSWIN - /* - * Handle ":8" after we have done 'heads' and before we do 'tails'. - */ - if (has_shortname) - { - /* Copy the string if it is shortened by :h and when it wasn't copied - * yet, because we are going to change it in place. Avoids changing - * the buffer name for "%:8". */ - if (*fnamelen < (int)STRLEN(*fnamep) || *fnamep == fname_start) - { - p = vim_strnsave(*fnamep, *fnamelen); - if (p == NULL) - return -1; - vim_free(*bufp); - *bufp = *fnamep = p; - } - - /* Split into two implementations - makes it easier. First is where - * there isn't a full name already, second is where there is. */ - if (!has_fullname && !vim_isAbsName(*fnamep)) - { - if (shortpath_for_partial(fnamep, bufp, fnamelen) == FAIL) - return -1; - } - else - { - int l = *fnamelen; - - /* Simple case, already have the full-name. - * Nearly always shorter, so try first time. */ - if (get_short_pathname(fnamep, bufp, &l) == FAIL) - return -1; - - if (l == 0) - { - /* Couldn't find the filename, search the paths. */ - l = *fnamelen; - if (shortpath_for_invalid_fname(fnamep, bufp, &l) == FAIL) - return -1; - } - *fnamelen = l; - } - } -#endif // MSWIN - - /* ":t" - tail, just the basename */ - if (src[*usedlen] == ':' && src[*usedlen + 1] == 't') - { - *usedlen += 2; - *fnamelen -= (int)(tail - *fnamep); - *fnamep = tail; - } - - /* ":e" - extension, can be repeated */ - /* ":r" - root, without extension, can be repeated */ - while (src[*usedlen] == ':' - && (src[*usedlen + 1] == 'e' || src[*usedlen + 1] == 'r')) - { - /* find a '.' in the tail: - * - for second :e: before the current fname - * - otherwise: The last '.' - */ - if (src[*usedlen + 1] == 'e' && *fnamep > tail) - s = *fnamep - 2; - else - s = *fnamep + *fnamelen - 1; - for ( ; s > tail; --s) - if (s[0] == '.') - break; - if (src[*usedlen + 1] == 'e') /* :e */ - { - if (s > tail) - { - *fnamelen += (int)(*fnamep - (s + 1)); - *fnamep = s + 1; -#ifdef VMS - /* cut version from the extension */ - s = *fnamep + *fnamelen - 1; - for ( ; s > *fnamep; --s) - if (s[0] == ';') - break; - if (s > *fnamep) - *fnamelen = s - *fnamep; -#endif - } - else if (*fnamep <= tail) - *fnamelen = 0; - } - else /* :r */ - { - if (s > tail) /* remove one extension */ - *fnamelen = (int)(s - *fnamep); - } - *usedlen += 2; - } - - /* ":s?pat?foo?" - substitute */ - /* ":gs?pat?foo?" - global substitute */ - if (src[*usedlen] == ':' - && (src[*usedlen + 1] == 's' - || (src[*usedlen + 1] == 'g' && src[*usedlen + 2] == 's'))) - { - char_u *str; - char_u *pat; - char_u *sub; - int sep; - char_u *flags; - int didit = FALSE; - - flags = (char_u *)""; - s = src + *usedlen + 2; - if (src[*usedlen + 1] == 'g') - { - flags = (char_u *)"g"; - ++s; - } - - sep = *s++; - if (sep) - { - /* find end of pattern */ - p = vim_strchr(s, sep); - if (p != NULL) - { - pat = vim_strnsave(s, (int)(p - s)); - if (pat != NULL) - { - s = p + 1; - /* find end of substitution */ - p = vim_strchr(s, sep); - if (p != NULL) - { - sub = vim_strnsave(s, (int)(p - s)); - str = vim_strnsave(*fnamep, *fnamelen); - if (sub != NULL && str != NULL) - { - *usedlen = (int)(p + 1 - src); - s = do_string_sub(str, pat, sub, NULL, flags); - if (s != NULL) - { - *fnamep = s; - *fnamelen = (int)STRLEN(s); - vim_free(*bufp); - *bufp = s; - didit = TRUE; - } - } - vim_free(sub); - vim_free(str); - } - vim_free(pat); - } - } - /* after using ":s", repeat all the modifiers */ - if (didit) - goto repeat; - } - } - - if (src[*usedlen] == ':' && src[*usedlen + 1] == 'S') - { - /* vim_strsave_shellescape() needs a NUL terminated string. */ - c = (*fnamep)[*fnamelen]; - if (c != NUL) - (*fnamep)[*fnamelen] = NUL; - p = vim_strsave_shellescape(*fnamep, FALSE, FALSE); - if (c != NUL) - (*fnamep)[*fnamelen] = c; - if (p == NULL) - return -1; - vim_free(*bufp); - *bufp = *fnamep = p; - *fnamelen = (int)STRLEN(p); - *usedlen += 2; - } - - return valid; -} +#endif // FEAT_EVAL /* * Perform a substitution on "str" with pattern "pat" and substitute "sub". @@ -7134,5 +6491,3 @@ do_string_sub( return ret; } - -#endif /* defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) */