c721300b59
Fixed doc typos git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@17156 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
142 lines
3.8 KiB
C
142 lines
3.8 KiB
C
/*****************************************************************************
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dos2unix, unix2dos: translate unix <-> dos text files by
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-> adding a CR before each LF
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<- removing the CR from CRLF pairs
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Use a modern compiler (gcc); name the executable either unix2dos or dos2unix,
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and link to the other name. A warning will be printed if the input of unix2dos
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contains CR's, as it may have already been a dos file (output still produced).
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The warning is not produced if input is stdin.
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Jim Martino +++++++++++++++++++++++++++++
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jrm@chow.mat.jhu.edu + PLACE COMMERCIAL HERE +
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jmartino@jhunix.hcf.jhu.edu +++++++++++++++++++++++++++++
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Modified by Julian Smart, September 2002
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*****************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define CR '\015' /* define CR character */
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#define LF '\012' /* define LF character */
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char *prog; /* global var: program name as called */
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int warning=0; /* global var: flag for unix2dos if input has CR's */
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void usage();
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void translate(FILE *, FILE *, int unix2Dos);
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main(int argc, char *argv[])
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{
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FILE *fp, *outFile;
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int i;
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int unix2Dos;
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prog = argv[0]; /* program name as called */
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unix2Dos = 1;
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i = 1;
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if (i > argc)
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{
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if (strcmp(argv[1], "--help") == 0)
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{
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usage();
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}
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else if (strcmp(argv[1], "--dos2unix") == 0)
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{
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unix2Dos = 0;
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}
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else if (strcmp(argv[1], "--unix2dos") == 0)
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{
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unix2Dos = 1;
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}
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else
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{
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usage();
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}
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}
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else
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usage();
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i ++;
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if (i == argc)
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translate(stdin, stdout, unix2Dos);
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else
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{
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while (i < argc)
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{
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char tmpFile[512];
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sprintf(tmpFile, "%s.tmp", argv[i]);
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fp = fopen(argv[i], "r");
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outFile = fopen(tmpFile, "w");
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if (!outFile)
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{
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fprintf(stderr, "Cannot open %s.\n", tmpFile);
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exit(1);
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}
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if (!fp)
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{
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fprintf(stderr, "Cannot open %s.\n", argv[i]);
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exit(1);
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}
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translate(fp, outFile, unix2Dos);
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if (warning) /* unix2dos acting on a possible DOS file */
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{
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fprintf(stderr,"%s: %s may have already been in DOS format.\n",
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prog, argv[i]);
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}
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fclose(fp);
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fclose(outFile);
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#ifdef _WINDOWS
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remove(argv[i]);
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#else
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unlink(argv[i]);
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#endif
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rename(tmpFile, argv[i]);
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i ++;
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}
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}
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}
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/* translate: unix2dos-change LF to CRLF
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dos2unix-strip out CR only before LF */
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void translate(FILE *ifp, FILE *ofp, int unix2Dos)
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{
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int c,d;
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if (!unix2Dos)
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/* DOS2Unix */
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while ((c = getc(ifp)) != EOF){
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if (c == CR)
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switch(d = getc(ifp)){ /* check to see if LF follows */
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case LF:
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putc(d,ofp); /* if so, ignore CR */
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break;
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default:
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putc(c,ofp); /* if not, output CR and following char */
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putc(d,ofp);
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} else putc(c, ofp); /* c is not a CR */
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}
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else
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/* Unix2DOS */
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while ((c = getc(ifp)) != EOF){
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if (c == CR)
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warning = 1; /* set warning flag: input file may be a DOS file */
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if (c == LF)
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putc(CR, ofp); /* add CR before each LF */
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putc(c, ofp);
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}
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}
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void usage()
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{
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fprintf(stderr, "Usage:\n%s [--dos2unix] [--unix2dos] file1 file2 ...\nor\n%s [--dos2unix] [--unix2dos] < infile > outfile\n", prog, prog);
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exit(0);
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}
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