2 * Copyright (C) 1984-2011 Mark Nudelman
4 * You may distribute under the terms of either the GNU General Public
5 * License or the Less License, as specified in the README file.
7 * For more information about less, or for information on how to
8 * contact the author, see the README file.
13 * lessecho [-ox] [-cx] [-pn] [-dn] [-a] file ...
14 * Simply echos its filename arguments on standard output.
15 * But any argument containing spaces is enclosed in quotes.
17 * -ox Specifies "x" to be the open quote character.
18 * -cx Specifies "x" to be the close quote character.
19 * -pn Specifies "n" to be the open quote character, as an integer.
20 * -dn Specifies "n" to be the close quote character, as an integer.
21 * -mx Specifies "x" to be a metachar.
22 * -nn Specifies "n" to be a metachar, as an integer.
23 * -ex Specifies "x" to be the escape char for metachars.
24 * -fn Specifies "x" to be the escape char for metachars, as an integer.
25 * -a Specifies that all arguments are to be quoted.
26 * The default is that only arguments containing spaces are quoted.
31 static char *version = "$Revision: 1.14 $";
33 static int quote_all = 0;
34 static char openquote = '"';
35 static char closequote = '"';
36 static char *meta_escape = "\\";
37 static char meta_escape_buf[2];
38 static char metachars[64] = "";
39 static int num_metachars = 0;
45 "usage: lessecho [-ox] [-cx] [-pn] [-dn] [-mx] [-nn] [-ex] [-fn] [-a] file ...\n");
55 for (p = version; *p != ' '; p++)
58 for (p++; *p != '$' && *p != ' ' && *p != '\0'; p++)
68 fprintf(stderr, "%s\n", s);
73 lstrtol(s, radix, pend)
82 /* Skip leading white space. */
83 while (*s == ' ' || *s == '\t')
86 /* Check for a leading + or -. */
96 /* Determine radix if caller does not specify. */
115 /* Parse the digits of the number. */
118 if (*s >= '0' && *s <= '9')
120 else if (*s >= 'a' && *s <= 'f')
122 else if (*s >= 'A' && *s <= 'F')
134 /* Skip trailing white space. */
135 while (*s == ' ' || *s == '\t')
151 for ( ; *s != '\0'; s++)
173 if (*arg != '-' || no_more_options)
184 closequote = lstrtol(++arg, 0, &s);
186 pr_error("Missing number after -d");
189 if (strcmp(++arg, "-") == 0)
195 meta_escape_buf[0] = lstrtol(++arg, 0, &s);
196 meta_escape = meta_escape_buf;
198 pr_error("Missing number after -f");
204 openquote = lstrtol(++arg, 0, &s);
206 pr_error("Missing number after -p");
209 metachars[num_metachars++] = *++arg;
210 metachars[num_metachars] = '\0';
213 metachars[num_metachars++] = lstrtol(++arg, 0, &s);
215 pr_error("Missing number after -n");
216 metachars[num_metachars] = '\0';
227 if (strcmp(arg, "version") == 0)
232 if (strcmp(arg, "help") == 0)
237 pr_error("Invalid option after --");
239 pr_error("Invalid option letter");
247 for (s = arg; *s != '\0'; s++)
249 if (strchr(metachars, *s) != NULL)
255 if (quote_all || (has_meta && strlen(meta_escape) == 0))
256 printf("%c%s%c", openquote, arg, closequote);
259 for (s = arg; *s != '\0'; s++)
261 if (strchr(metachars, *s) != NULL)
262 printf("%s", meta_escape);