csope/source/opt.c

#include "global.h"

#include "build.h"
#include "vp.h"
#include "version.h" /* FILEVERSION and FIXVERSION */

#include <stdlib.h>	 /* atoi */
#include <getopt.h>

bool  remove_symfile_onexit = false;
bool  onesearch; /* one search only in line mode */
char *reflines;	 /* symbol reference lines file */

char **parse_options(int *argc, char **argv) {
	int	  opt;
	int	  longind;
	char  path[PATHLEN + 1]; /* file path */
	char *s;
	int	  argcc = *argc;

	struct option lopts[] = {
		{"help",	 0, NULL, 'h'},
		{"version", 0, NULL, 'V'},
		{0,			0, 0,	  0  }
	};

	while((opt = getopt_long(argcc,
			   argv,
			   "hVbcCdeF:f:I:i:kLl0:1:2:3:4:5:6:7:8:9:P:p:qRs:TUuvX",
			   lopts,
			   &longind)) != -1) {
		switch(opt) {

			case '?':
				usage();
				myexit(1);
				break;
			case 'X':
				remove_symfile_onexit = true;
				break;
			case '0':
			case '1':
			case '2':
			case '3':
			case '4':
			case '5':
			case '6':
			case '7':
			case '8':
			case '9':
				/* The input fields numbers for line mode operation */
				field = opt - '0';
				if(strlen(optarg) > PATHLEN) {
					postfatal("\
        			cscope: pattern too long, cannot be > \
        			%d characters\n",
						PATLEN);
				}
				strcpy(input_line, optarg);
				break;
			case 'b': /* only build the cross-reference */
				buildonly = true;
				linemode  = true;
				break;
			case 'c': /* ASCII characters only in crossref */
				compress = false;
				break;
			case 'C':					 /* turn on caseless mode for symbol searches */
				caseless = true;
				egrepcaseless(caseless); /* simulate egrep -i flag */
				break;
			case 'd':					 /* consider crossref up-to-date */
				isuptodate = true;
				break;
			case 'e': /* suppress ^E prompt between files */
				editallprompt = false;
				break;
			case 'h':
				longusage();
				myexit(1);
				break;
			case 'k': /* ignore DFLT_INCDIR */
				kernelmode = true;
				break;
			case 'L':
				onesearch = true;
				/* FALLTHROUGH */
			case 'l':
				linemode = true;
				break;
			case 'v':
				verbosemode = true;
				break;
			case 'V':
				fprintf(stderr, PROGRAM_NAME ": version %d%s\n", FILEVERSION, FIXVERSION);
				myexit(0);
				break;
			case 'q': /* quick search */
				invertedindex = true;
				break;
			case 'T': /* truncate symbols to 8 characters */
				trun_syms = true;
				break;
			case 'u': /* unconditionally build the cross-reference */
				unconditional = true;
				break;
			case 'U': /* assume some files have changed */
				fileschanged = true;
				break;
			case 'R':
				recurse_dir = true;
				break;
			case 'f': /* alternate cross-reference file */
				reffile = optarg;
				if(strlen(reffile) > sizeof(path) - 3) {
					postfatal("\
        			cscope: reffile too long, cannot \
        			be > %d characters\n",
						sizeof(path) - 3);
					/* NOTREACHED */
				}
				strcpy(path, reffile);

				s = path + strlen(path);
				strcpy(s, ".in");
				/*coverity[overwrite_var]*/
				invname = strdup(path);
				strcpy(s, ".po");
				/*coverity[overwrite_var]*/
				invpost = strdup(path);
				break;

			case 'F': /* symbol reference lines file */
				reflines = optarg;
				break;
			case 'i': /* file containing file names */
				namefile = optarg;
				break;
			case 'I': /* #include file directory */
				includedir(optarg);
				break;
			case 'p': /* file path components to display */
				dispcomponents = atoi(optarg);
				break;
			case 'P': /* prepend path to file names */
				prependpath = optarg;
				break;
			case 's': /* additional source file directory */
				sourcedir(optarg);
				break;
		}
	}
	/*
	 * This adjusts argv so that we only see the remaining
	 * args.  Its ugly, but we need to do it so that the rest
	 * of the main routine doesn't get all confused
	 */
	*argc = *argc - optind;
	return argv + optind;
}