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unix2dos.c
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/*
* Name: unix2dos
* Documentation:
* Convert lf ('\x0a') characters in a file to cr lf ('\x0d' '\x0a')
* combinations.
*
* The dos2unix package is distributed under FreeBSD style license.
* See also https://www.freebsd.org/copyright/freebsd-license.html
* --------
*
* Copyright (C) 2009-2024 Erwin Waterlander
* Copyright (C) 1994-1995 Benjamin Lin.
* 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 in the documentation and/or other materials provided with
* the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* == 1.0 == 1989.10.04 == John Birchfield ([email protected])
* == 1.1 == 1994.12.20 == Benjamin Lin ([email protected])
* Cleaned up for Borland C/C++ 4.02
* == 1.2 == 1995.03.09 == Benjamin Lin ([email protected])
* Fixed minor typo error
* == 1.3 == 1995.03.16 == Benjamin Lin ([email protected])
* Modified to more conform to UNIX style.
* == 2.0 == 1995.03.19 == Benjamin Lin ([email protected])
* Rewritten from scratch.
* == 2.2 == 1995.03.30 == Benjamin Lin ([email protected])
* Conversion from SunOS charset implemented.
*
* See ChangeLog.txt for complete version history.
*
*/
/* #define DEBUG 1 */
#define __UNIX2DOS_C
#include "common.h"
#include "unix2dos.h"
# if (defined(_WIN32) && !defined(__CYGWIN__))
#include <windows.h>
#endif
#ifdef D2U_UNICODE
#if !defined(__MSDOS__) && !defined(_WIN32) && !defined(__OS2__) /* Unix, Cygwin */
# include <langinfo.h>
#endif
#endif
void PrintLicense(void)
{
D2U_ANSI_FPRINTF(stdout,_("\
Copyright (C) 2009-%d Erwin Waterlander\n\
Copyright (C) 1994-1995 Benjamin Lin\n\
All rights reserved.\n\n"),2024);
PrintBSDLicense();
}
#ifdef D2U_UNICODE
wint_t PutDOSNewLineW(FILE *ipOutF, CFlag *ipFlag, const char *progname)
{
if (d2u_putwc(0x0d, ipOutF, ipFlag, progname) == WEOF) {
d2u_putwc_error(ipFlag, progname);
return WEOF;
}
if (d2u_putwc(0x0a, ipOutF, ipFlag, progname) == WEOF) {
d2u_putwc_error(ipFlag, progname);
return WEOF;
}
return 0x0a;
}
wint_t AddExtraDOSNewLineW(FILE* ipOutF, CFlag *ipFlag, wint_t CurChar, wint_t PrevChar, const char *progname)
{
wint_t c = CurChar;
/* Don't add line ending if it is a DOS line ending. Only in case of Unix line ending. */
if ((CurChar == 0x0a) && (PrevChar != 0x0d)) {
if ((c = PutDOSNewLineW(ipOutF, ipFlag, progname)) == WEOF) {
return WEOF;
}
}
return c;
}
#endif
int PutDOSNewLine(FILE *ipOutF, CFlag *ipFlag, const char *progname)
{
if (fputc('\x0d', ipOutF) == EOF) {
d2u_putc_error(ipFlag, progname);
return EOF;
}
if (fputc('\x0a', ipOutF) == EOF) {
d2u_putc_error(ipFlag, progname);
return EOF;
}
return '\x0a';
}
int AddExtraDOSNewLine(FILE* ipOutF, CFlag *ipFlag, int CurChar, int PrevChar, const char *progname)
{
int c = CurChar;
/* Don't add line ending if it is a DOS line ending. Only in case of Unix line ending. */
if ((CurChar == '\x0a') && (PrevChar != '\x0d')) {
if ((c = PutDOSNewLine(ipOutF, ipFlag, progname)) == EOF) {
return EOF;
}
}
return c;
}
/* converts stream ipInF to DOS format text and write to stream ipOutF
* RetVal: 0 if success
* -1 otherwise
*/
#ifdef D2U_UNICODE
int ConvertUnixToDosW(FILE* ipInF, FILE* ipOutF, CFlag *ipFlag, const char *progname)
{
int RetVal = 0;
wint_t TempChar;
wint_t PreviousChar = WEOF;
unsigned int line_nr = 1;
unsigned int converted = 0;
ipFlag->status = 0;
/* LF -> CR-LF */
/* CR-LF -> CR-LF, in case the input file is a DOS text file */
/* \x0a = Newline/Line Feed (LF) */
/* \x0d = Carriage Return (CR) */
switch (ipFlag->FromToMode)
{
case FROMTO_UNIX2DOS: /* unix2dos */
while ((TempChar = d2u_getwc(ipInF, ipFlag->bomtype)) != WEOF) { /* get character */
if ((ipFlag->Force == 0) &&
(TempChar < 32) &&
(TempChar != 0x0a) && /* Not an LF */
(TempChar != 0x0d) && /* Not a CR */
(TempChar != 0x09) && /* Not a TAB */
(TempChar != 0x0c)) { /* Not a form feed */
RetVal = -1;
ipFlag->status |= BINARY_FILE ;
if (ipFlag->verbose) {
if ((ipFlag->stdio_mode) && (!ipFlag->error)) ipFlag->error = 1;
D2U_UTF8_FPRINTF(stderr, "%s: ", progname);
D2U_UTF8_FPRINTF(stderr, _("Binary symbol 0x00%02X found at line %u\n"), TempChar, line_nr);
}
break;
}
if (TempChar == 0x0a) {
if (d2u_putwc(0x0d, ipOutF, ipFlag, progname) == WEOF) { /* got LF, put extra CR */
RetVal = -1;
d2u_putwc_error(ipFlag,progname);
break;
}
converted++;
} else {
if (TempChar == 0x0d) { /* got CR */
if ((TempChar = d2u_getwc(ipInF, ipFlag->bomtype)) == WEOF) { /* get next char (possibly LF) */
if (ferror(ipInF)) /* Read error */
break;
TempChar = 0x0d; /* end of file. */
} else {
if (d2u_putwc(0x0d, ipOutF, ipFlag, progname) == WEOF) { /* put CR */
RetVal = -1;
d2u_putwc_error(ipFlag,progname);
break;
}
PreviousChar = 0x0d;
}
}
}
if (TempChar == 0x0a) /* Count all DOS and Unix line breaks */
++line_nr;
if (d2u_putwc(TempChar, ipOutF, ipFlag, progname) == WEOF)
{
RetVal = -1;
d2u_putwc_error(ipFlag,progname);
break;
}
if (ipFlag->NewLine) { /* add additional CR-LF? */
if (AddExtraDOSNewLineW( ipOutF, ipFlag, TempChar, PreviousChar, progname) == WEOF) {
RetVal = -1;
break;
}
}
PreviousChar = TempChar;
}
if (TempChar == WEOF && ipFlag->add_eol && PreviousChar != WEOF && PreviousChar != '\x0a') {
/* Add missing line break at the last line. */
if (ipFlag->verbose > 1) {
D2U_UTF8_FPRINTF(stderr, "%s: ", progname);
D2U_UTF8_FPRINTF(stderr, _("Added line break to last line.\n"));
}
if (PutDOSNewLineW(ipOutF, ipFlag, progname) == WEOF) {
RetVal = -1;
}
}
if ((TempChar == WEOF) && ferror(ipInF)) {
RetVal = -1;
d2u_getc_error(ipFlag,progname);
}
break;
case FROMTO_UNIX2MAC: /* unix2mac */
while ((TempChar = d2u_getwc(ipInF, ipFlag->bomtype)) != WEOF) {
if ((ipFlag->Force == 0) &&
(TempChar < 32) &&
(TempChar != 0x0a) && /* Not an LF */
(TempChar != 0x0d) && /* Not a CR */
(TempChar != 0x09) && /* Not a TAB */
(TempChar != 0x0c)) { /* Not a form feed */
RetVal = -1;
ipFlag->status |= BINARY_FILE ;
if (ipFlag->verbose) {
if ((ipFlag->stdio_mode) && (!ipFlag->error)) ipFlag->error = 1;
D2U_UTF8_FPRINTF(stderr, "%s: ", progname);
D2U_UTF8_FPRINTF(stderr, _("Binary symbol 0x00%02X found at line %u\n"), TempChar, line_nr);
}
break;
}
if (TempChar != 0x0a) { /* Not an LF */
if(d2u_putwc(TempChar, ipOutF, ipFlag, progname) == WEOF) {
RetVal = -1;
d2u_putwc_error(ipFlag,progname);
break;
}
PreviousChar = TempChar;
if (TempChar == 0x0d) /* CR */
++line_nr;
} else{
/* TempChar is an LF */
if (PreviousChar != 0x0d) /* CR already counted */
++line_nr;
/* Don't touch this delimiter if it's a CR,LF pair. */
if ( PreviousChar == 0x0d ) {
if (d2u_putwc(0x0a, ipOutF, ipFlag, progname) == WEOF) { /* CR,LF pair. Put LF */
RetVal = -1;
d2u_putwc_error(ipFlag,progname);
break;
}
PreviousChar = TempChar;
continue;
}
PreviousChar = TempChar;
if (d2u_putwc(0x0d, ipOutF, ipFlag, progname) == WEOF) { /* Unix line end (LF). Put CR */
RetVal = -1;
d2u_putwc_error(ipFlag,progname);
break;
}
converted++;
if (ipFlag->NewLine) { /* add additional CR? */
if (d2u_putwc(0x0d, ipOutF, ipFlag, progname) == WEOF) {
RetVal = -1;
d2u_putwc_error(ipFlag,progname);
break;
}
}
}
}
if (TempChar == WEOF && ipFlag->add_eol && PreviousChar != WEOF && !(PreviousChar == 0x0a || PreviousChar == 0x0d)) {
/* Add missing line break at the last line. */
if (ipFlag->verbose > 1) {
D2U_UTF8_FPRINTF(stderr, "%s: ", progname);
D2U_UTF8_FPRINTF(stderr, _("Added line break to last line.\n"));
}
if (d2u_putwc(0x0d, ipOutF, ipFlag, progname) == WEOF) {
RetVal = -1;
d2u_putwc_error(ipFlag,progname);
}
}
if ((TempChar == WEOF) && ferror(ipInF)) {
RetVal = -1;
d2u_getc_error(ipFlag,progname);
}
break;
default: /* unknown FromToMode */
;
#if DEBUG
D2U_UTF8_FPRINTF(stderr, "%s: ", progname);
D2U_UTF8_FPRINTF(stderr, _("program error, invalid conversion mode %d\n"),ipFlag->FromToMode);
exit(1);
#endif
}
if (ipFlag->status & UNICODE_CONVERSION_ERROR)
ipFlag->line_nr = line_nr;
if ((RetVal == 0) && (ipFlag->verbose > 1)) {
D2U_UTF8_FPRINTF(stderr, "%s: ", progname);
D2U_UTF8_FPRINTF(stderr, _("Converted %u out of %u line breaks.\n"), converted, line_nr -1);
}
return RetVal;
}
#endif
/* converts stream ipInF to DOS format text and write to stream ipOutF
* RetVal: 0 if success
* -1 otherwise
*/
int ConvertUnixToDos(FILE* ipInF, FILE* ipOutF, CFlag *ipFlag, const char *progname)
{
int RetVal = 0;
int TempChar;
int PreviousChar = EOF;
int *ConvTable;
unsigned int line_nr = 1;
unsigned int converted = 0;
ipFlag->status = 0;
switch (ipFlag->ConvMode) {
case CONVMODE_ASCII: /* ascii */
case CONVMODE_UTF16LE: /* Assume UTF-16LE, bomtype = FILE_UTF8 or GB18030 */
case CONVMODE_UTF16BE: /* Assume UTF-16BE, bomtype = FILE_UTF8 or GB18030 */
ConvTable = U2DAsciiTable;
break;
case CONVMODE_7BIT: /* 7bit */
ConvTable = U2D7BitTable;
break;
case CONVMODE_437: /* iso */
ConvTable = U2DIso437Table;
break;
case CONVMODE_850: /* iso */
ConvTable = U2DIso850Table;
break;
case CONVMODE_860: /* iso */
ConvTable = U2DIso860Table;
break;
case CONVMODE_863: /* iso */
ConvTable = U2DIso863Table;
break;
case CONVMODE_865: /* iso */
ConvTable = U2DIso865Table;
break;
case CONVMODE_1252: /* iso */
ConvTable = U2DIso1252Table;
break;
default: /* unknown convmode */
ipFlag->status |= WRONG_CODEPAGE ;
return(-1);
}
/* Turn off ISO and 7-bit conversion for Unicode text files */
if (ipFlag->bomtype > 0)
ConvTable = U2DAsciiTable;
if ((ipFlag->ConvMode > CONVMODE_7BIT) && (ipFlag->verbose)) { /* not ascii or 7bit */
D2U_UTF8_FPRINTF(stderr, "%s: ", progname);
D2U_UTF8_FPRINTF(stderr, _("using code page %d.\n"), ipFlag->ConvMode);
}
/* LF -> CR-LF */
/* CR-LF -> CR-LF, in case the input file is a DOS text file */
/* \x0a = Newline/Line Feed (LF) */
/* \x0d = Carriage Return (CR) */
switch (ipFlag->FromToMode) {
case FROMTO_UNIX2DOS: /* unix2dos */
while ((TempChar = fgetc(ipInF)) != EOF) { /* get character */
if ((ipFlag->Force == 0) &&
(TempChar < 32) &&
(TempChar != '\x0a') && /* Not an LF */
(TempChar != '\x0d') && /* Not a CR */
(TempChar != '\x09') && /* Not a TAB */
(TempChar != '\x0c')) { /* Not a form feed */
RetVal = -1;
ipFlag->status |= BINARY_FILE ;
if (ipFlag->verbose) {
if ((ipFlag->stdio_mode) && (!ipFlag->error)) ipFlag->error = 1;
D2U_UTF8_FPRINTF(stderr, "%s: ", progname);
D2U_UTF8_FPRINTF(stderr, _("Binary symbol 0x%02X found at line %u\n"), TempChar, line_nr);
}
break;
}
if (TempChar == '\x0a')
{
if (fputc('\x0d', ipOutF) == EOF) { /* got LF, put extra CR */
RetVal = -1;
d2u_putc_error(ipFlag,progname);
break;
}
converted++;
} else {
if (TempChar == '\x0d') { /* got CR */
if ((TempChar = fgetc(ipInF)) == EOF) { /* get next char (possibly LF) */
if (ferror(ipInF)) /* Read error */
break;
TempChar = '\x0d'; /* end of file. */
} else {
if (fputc('\x0d', ipOutF) == EOF) { /* put CR */
RetVal = -1;
d2u_putc_error(ipFlag,progname);
break;
}
PreviousChar = '\x0d';
}
}
}
if (TempChar == '\x0a') /* Count all DOS and Unix line breaks */
++line_nr;
if (fputc(ConvTable[TempChar], ipOutF) == EOF) { /* put LF or other char */
RetVal = -1;
d2u_putc_error(ipFlag,progname);
break;
}
if (ipFlag->NewLine) { /* add additional CR-LF? */
if (AddExtraDOSNewLine( ipOutF, ipFlag, TempChar, PreviousChar, progname) == EOF) {
RetVal = -1;
break;
}
}
PreviousChar = TempChar;
}
if (TempChar == EOF && ipFlag->add_eol && PreviousChar != EOF && PreviousChar != '\x0a') {
/* Add missing line break at the last line. */
if (ipFlag->verbose > 1) {
D2U_UTF8_FPRINTF(stderr, "%s: ", progname);
D2U_UTF8_FPRINTF(stderr, _("Added line break to last line.\n"));
}
if (PutDOSNewLine(ipOutF, ipFlag, progname) == EOF) {
RetVal = -1;
}
}
if ((TempChar == EOF) && ferror(ipInF)) {
RetVal = -1;
d2u_getc_error(ipFlag,progname);
}
break;
case FROMTO_UNIX2MAC: /* unix2mac */
while ((TempChar = fgetc(ipInF)) != EOF) {
if ((ipFlag->Force == 0) &&
(TempChar < 32) &&
(TempChar != '\x0a') && /* Not an LF */
(TempChar != '\x0d') && /* Not a CR */
(TempChar != '\x09') && /* Not a TAB */
(TempChar != '\x0c')) { /* Not a form feed */
RetVal = -1;
ipFlag->status |= BINARY_FILE ;
if (ipFlag->verbose) {
if ((ipFlag->stdio_mode) && (!ipFlag->error)) ipFlag->error = 1;
D2U_UTF8_FPRINTF(stderr, "%s: ", progname);
D2U_UTF8_FPRINTF(stderr, _("Binary symbol 0x%02X found at line %u\n"), TempChar, line_nr);
}
break;
}
if (TempChar != '\x0a') { /* Not an LF */
if(fputc(ConvTable[TempChar], ipOutF) == EOF) {
RetVal = -1;
d2u_putc_error(ipFlag,progname);
break;
}
PreviousChar = TempChar;
if (TempChar == '\x0d') /* CR */
++line_nr;
} else {
/* TempChar is an LF */
if (PreviousChar != '\x0d') /* CR already counted */
++line_nr;
/* Don't touch this delimiter if it's a CR,LF pair. */
if ( PreviousChar == '\x0d' ) {
if (fputc('\x0a', ipOutF) == EOF) { /* CR,LF pair. Put LF */
RetVal = -1;
d2u_putc_error(ipFlag,progname);
break;
}
PreviousChar = TempChar;
continue;
}
PreviousChar = TempChar;
if (fputc('\x0d', ipOutF) == EOF) { /* Unix line end (LF). Put CR */
RetVal = -1;
d2u_putc_error(ipFlag,progname);
break;
}
converted++;
if (ipFlag->NewLine) { /* add additional CR? */
if (fputc('\x0d', ipOutF) == EOF) {
RetVal = -1;
d2u_putc_error(ipFlag,progname);
break;
}
}
}
}
if (TempChar == EOF && ipFlag->add_eol && PreviousChar != EOF && !(PreviousChar == '\x0a' || PreviousChar == '\x0d')) {
/* Add missing line break at the last line. */
if (ipFlag->verbose > 1) {
D2U_UTF8_FPRINTF(stderr, "%s: ", progname);
D2U_UTF8_FPRINTF(stderr, _("Added line break to last line.\n"));
}
if (fputc('\x0d', ipOutF) == EOF) {
RetVal = -1;
d2u_putc_error(ipFlag,progname);
}
}
if ((TempChar == EOF) && ferror(ipInF)) {
RetVal = -1;
d2u_getc_error(ipFlag,progname);
}
break;
default: /* unknown FromToMode */
;
#if DEBUG
D2U_UTF8_FPRINTF(stderr, "%s: ", progname);
D2U_UTF8_FPRINTF(stderr, _("program error, invalid conversion mode %d\n"),ipFlag->FromToMode);
exit(1);
#endif
}
if ((RetVal == 0) && (ipFlag->verbose > 1)) {
D2U_UTF8_FPRINTF(stderr, "%s: ", progname);
D2U_UTF8_FPRINTF(stderr, _("Converted %u out of %u line breaks.\n"), converted, line_nr -1);
}
return RetVal;
}
int main (int argc, char *argv[])
{
/* variable declarations */
char progname[9];
CFlag *pFlag;
char *ptr;
char localedir[1024];
int ret;
# ifdef __MINGW64__
int _dowildcard = -1; /* enable wildcard expansion for Win64 */
# endif
int argc_new;
char **argv_new;
#ifdef D2U_UNIFILE
wchar_t **wargv;
char ***argv_glob;
#endif
progname[8] = '\0';
strcpy(progname,"unix2dos");
#ifdef ENABLE_NLS
ptr = getenv("DOS2UNIX_LOCALEDIR");
if (ptr == NULL)
d2u_strncpy(localedir,LOCALEDIR,sizeof(localedir));
else {
if (strlen(ptr) < sizeof(localedir))
d2u_strncpy(localedir,ptr,sizeof(localedir));
else {
D2U_UTF8_FPRINTF(stderr,"%s: ",progname);
D2U_ANSI_FPRINTF(stderr, "%s", _("error: Value of environment variable DOS2UNIX_LOCALEDIR is too long.\n"));
d2u_strncpy(localedir,LOCALEDIR,sizeof(localedir));
}
}
#endif
#if defined(ENABLE_NLS) || (defined(D2U_UNICODE) && !defined(__MSDOS__) && !defined(_WIN32) && !defined(__OS2__))
/* setlocale() is also needed for nl_langinfo() */
#if (defined(_WIN32) && !defined(__CYGWIN__))
/* When the locale is set to "" on Windows all East-Asian multi-byte ANSI encoded text is printed
wrongly when you use standard printf(). Also UTF-8 code is printed wrongly. See also test/setlocale.c.
When we set the locale to "C" gettext still translates the messages on Windows. On Unix this would disable
gettext. */
setlocale (LC_ALL, "C");
#else
setlocale (LC_ALL, "");
#endif
#endif
#ifdef ENABLE_NLS
bindtextdomain (PACKAGE, localedir);
textdomain (PACKAGE);
#endif
/* variable initialisations */
pFlag = (CFlag*)malloc(sizeof(CFlag));
if (pFlag == NULL) {
D2U_UTF8_FPRINTF(stderr, "unix2dos:");
D2U_ANSI_FPRINTF(stderr, " %s\n", strerror(errno));
return errno;
}
pFlag->FromToMode = FROMTO_UNIX2DOS; /* default unix2dos */
pFlag->keep_bom = 1;
if ( ((ptr=strrchr(argv[0],'/')) == NULL) && ((ptr=strrchr(argv[0],'\\')) == NULL) )
ptr = argv[0];
else
ptr++;
if ((strcmpi("unix2mac", ptr) == 0) || (strcmpi("unix2mac.exe", ptr) == 0)) {
pFlag->FromToMode = FROMTO_UNIX2MAC;
strcpy(progname,"unix2mac");
}
#ifdef D2U_UNIFILE
/* Get arguments in wide Unicode format in the Windows Command Prompt */
/* This does not support wildcard expansion (globbing) */
wargv = CommandLineToArgvW(GetCommandLineW(), &argc);
argv_glob = (char ***)malloc(sizeof(char***));
if (argv_glob == NULL) {
D2U_UTF8_FPRINTF(stderr, "%s:", progname);
D2U_ANSI_FPRINTF(stderr, " %s\n", strerror(errno));
free(pFlag);
return errno;
}
/* Glob the arguments and convert them to UTF-8 */
argc_new = glob_warg(argc, wargv, argv_glob, pFlag, progname);
argv_new = *argv_glob;
#else
argc_new = argc;
argv_new = argv;
#endif
#ifdef D2U_UNICODE
ret = parse_options(argc_new, argv_new, pFlag, localedir, progname, PrintLicense, ConvertUnixToDos, ConvertUnixToDosW);
#else
ret = parse_options(argc_new, argv_new, pFlag, localedir, progname, PrintLicense, ConvertUnixToDos);
#endif
free(pFlag);
return ret;
}