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- /* Copyright (C) 1992, 2000 Aladdin Enterprises. All rights reserved.
-
- This file is part of AFPL Ghostscript.
-
- AFPL Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author or
- distributor accepts any responsibility for the consequences of using it, or
- for whether it serves any particular purpose or works at all, unless he or
- she says so in writing. Refer to the Aladdin Free Public License (the
- "License") for full details.
-
- Every copy of AFPL Ghostscript must include a copy of the License, normally
- in a plain ASCII text file named PUBLIC. The License grants you the right
- to copy, modify and redistribute AFPL Ghostscript, but only under certain
- conditions described in the License. Among other things, the License
- requires that the copyright notice and this notice be preserved on all
- copies.
- */
-
- /*$Id: gp_ntfs.c,v 1.4 2000/09/19 19:00:24 lpd Exp $ */
- /* file system stuff for MS-Windows WIN32 and MS-Windows NT */
- /* hacked from gp_dosfs.c by Russell Lang */
-
- #include "stdio_.h"
- #include <fcntl.h>
- #include <io.h>
- #include <stdio.h>
- #include "dos_.h"
- #include "memory_.h"
- #include "string_.h"
- #include "gstypes.h"
- #include "gsmemory.h"
- #include "gsstruct.h"
- #include "gp.h"
- #include "gsutil.h"
- #include "windows_.h"
-
- /* ------ Printer accessing ------ */
-
- /* Put a printer file (which might be stdout) into binary or text mode. */
- /* This is not a standard gp procedure, */
- /* but all MS-DOS configurations need it. */
- private int
- setmode_binary(int fno, bool binary)
- {
- /* Use non-standard setmode that almost all NT compilers offer. */
- #if defined(__STDC__) && !defined(__WATCOMC__)
- return _setmode(fno, binary ? _O_BINARY : _O_TEXT);
- #else
- return setmode(fno, binary ? O_BINARY : O_TEXT);
- #endif
- }
- void
- gp_set_file_binary(int prnfno, int binary)
- {
- DISCARD(setmode_binary(prnfno, binary != 0));
- }
-
- /* ------ File accessing -------- */
-
- /* Set a file into binary or text mode. */
- int
- gp_setmode_binary(FILE * pfile, bool binary)
- {
- /* Use non-standard fileno that almost all NT compilers offer. */
- #if defined(__STDC__) && !defined(__WATCOMC__)
- int code = setmode_binary(_fileno(pfile), binary);
- #else
- int code = setmode_binary(fileno(pfile), binary);
- #endif
-
- return (code == -1 ? -1 : 0);
- }
-
- /* ------ File names ------ */
-
- /* Define the character used for separating file names in a list. */
- const char gp_file_name_list_separator = ';';
-
- /* Define the string to be concatenated with the file mode */
- /* for opening files without end-of-line conversion. */
- const char gp_fmode_binary_suffix[] = "b";
-
- /* Define the file modes for binary reading or writing. */
- const char gp_fmode_rb[] = "rb";
- const char gp_fmode_wb[] = "wb";
-
- /* Answer whether a file name contains a directory/device specification, */
- /* i.e. is absolute (not directory- or device-relative). */
- bool
- gp_file_name_is_absolute(const char *fname, uint len)
- { /* A file name is absolute if it contains a drive specification */
- /* (second character is a :) or if it start with 0 or more .s */
- /* followed by a / or \. */
- if (len >= 2 && fname[1] == ':')
- return true;
- while (len && *fname == '.')
- ++fname, --len;
- return (len && (*fname == '/' || *fname == '\\'));
- }
-
- /* Answer the string to be used for combining a directory/device prefix */
- /* with a base file name. The file name is known to not be absolute. */
- const char *
- gp_file_name_concat_string(const char *prefix, uint plen,
- const char *fname, uint len)
- {
- if (plen > 0)
- switch (prefix[plen - 1]) {
- case ':':
- case '/':
- case '\\':
- return "";
- };
- return "\\";
- }
-
- /* ------ File enumeration ------ */
-
- struct file_enum_s {
- WIN32_FIND_DATA find_data;
- HANDLE find_handle;
- char *pattern; /* orig pattern + modified pattern */
- int patlen; /* orig pattern length */
- int pat_size; /* allocate space for pattern */
- int head_size; /* pattern length through last */
- /* :, / or \ */
- int first_time;
- gs_memory_t *memory;
- };
- gs_private_st_ptrs1(st_file_enum, struct file_enum_s, "file_enum",
- file_enum_enum_ptrs, file_enum_reloc_ptrs, pattern);
-
- /* Initialize an enumeration. Note that * and ? in a directory */
- /* don't work, and \ is taken literally unless a second \ follows. */
- file_enum *
- gp_enumerate_files_init(const char *pat, uint patlen, gs_memory_t * mem)
- {
- file_enum *pfen = gs_alloc_struct(mem, file_enum, &st_file_enum, "gp_enumerate_files");
- int pat_size = 2 * patlen + 1;
- char *pattern;
- int hsize = 0;
- int i;
-
- if (pfen == 0)
- return 0;
-
- /* pattern could be allocated as a string, */
- /* but it's simpler for GC and freeing to allocate it as bytes. */
-
- pattern = (char *)gs_alloc_bytes(mem, pat_size,
- "gp_enumerate_files(pattern)");
- if (pattern == 0)
- return 0;
- memcpy(pattern, pat, patlen);
- /* find directory name = header */
- for (i = 0; i < patlen; i++) {
- switch (pat[i]) {
- case '\\':
- if (i + 1 < patlen && pat[i + 1] == '\\')
- i++;
- /* falls through */
- case ':':
- case '/':
- hsize = i + 1;
- }
- }
- pattern[patlen] = 0;
- pfen->pattern = pattern;
- pfen->patlen = patlen;
- pfen->pat_size = pat_size;
- pfen->head_size = hsize;
- pfen->memory = mem;
- pfen->first_time = 1;
- memset(&pfen->find_data, 0, sizeof(pfen->find_data));
- pfen->find_handle = INVALID_HANDLE_VALUE;
- return pfen;
- }
-
- /* Enumerate the next file. */
- uint
- gp_enumerate_files_next(file_enum * pfen, char *ptr, uint maxlen)
- {
- int code = 0;
- uint len;
-
- if (pfen->first_time) {
- pfen->find_handle = FindFirstFile(pfen->pattern, &(pfen->find_data));
- if (pfen->find_handle == INVALID_HANDLE_VALUE)
- code = -1;
- pfen->first_time = 0;
- } else {
- if (!FindNextFile(pfen->find_handle, &(pfen->find_data)))
- code = -1;
- }
- if (code != 0) { /* All done, clean up. */
- gp_enumerate_files_close(pfen);
- return ~(uint) 0;
- }
- len = strlen(pfen->find_data.cFileName);
-
- if (pfen->head_size + len < maxlen) {
- memcpy(ptr, pfen->pattern, pfen->head_size);
- strcpy(ptr + pfen->head_size, pfen->find_data.cFileName);
- return pfen->head_size + len;
- }
- if (pfen->head_size >= maxlen)
- return 0; /* no hope at all */
-
- memcpy(ptr, pfen->pattern, pfen->head_size);
- strncpy(ptr + pfen->head_size, pfen->find_data.cFileName,
- maxlen - pfen->head_size - 1);
- return maxlen;
- }
-
- /* Clean up the file enumeration. */
- void
- gp_enumerate_files_close(file_enum * pfen)
- {
- gs_memory_t *mem = pfen->memory;
-
- if (pfen->find_handle != INVALID_HANDLE_VALUE)
- FindClose(pfen->find_handle);
- gs_free_object(mem, pfen->pattern,
- "gp_enumerate_files_close(pattern)");
- gs_free_object(mem, pfen, "gp_enumerate_files_close");
- }
-