1 /* $OpenBSD: args.c,v 1.15 2009/10/27 23:59:39 deraadt Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1993 5 * The Regents of the University of California. 6 * Copyright (c) 1976 Board of Trustees of the University of Illinois. 7 * Copyright (c) 1985 Sun Microsystems, Inc. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Argument scanning and profile reading code. Default parameters are set 37 * here as well. 38 */ 39 40 #include <stdio.h> 41 #include <ctype.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <errno.h> 45 #include "indent_globs.h" 46 #include <err.h> 47 48 /* profile types */ 49 #define PRO_SPECIAL 1 /* special case */ 50 #define PRO_BOOL 2 /* boolean */ 51 #define PRO_INT 3 /* integer */ 52 #define PRO_FONT 4 /* troff font */ 53 54 /* profile specials for booleans */ 55 #define ON 1 /* turn it on */ 56 #define OFF 0 /* turn it off */ 57 58 /* profile specials for specials */ 59 #define IGN 1 /* ignore it */ 60 #define CLI 2 /* case label indent (float) */ 61 #define STDIN 3 /* use stdin */ 62 #define KEY 4 /* type (keyword) */ 63 64 char *option_source = "?"; 65 66 /* 67 * N.B.: because of the way the table here is scanned, options whose names are 68 * substrings of other options must occur later; that is, with -lp vs -l, -lp 69 * must be first. Also, while (most) booleans occur more than once, the last 70 * default value is the one actually assigned. 71 */ 72 struct pro { 73 char *p_name; /* name, eg -bl, -cli */ 74 int p_type; /* type (int, bool, special) */ 75 int p_default; /* the default value (if int) */ 76 int p_special; /* depends on type */ 77 int *p_obj; /* the associated variable */ 78 } pro[] = { 79 80 { "T", PRO_SPECIAL, 0, KEY, 0 }, 81 {"bacc", PRO_BOOL, false, ON, 82 &blanklines_around_conditional_compilation }, 83 {"badp", PRO_BOOL, false, ON, 84 &blanklines_after_declarations_at_proctop }, 85 {"bad", PRO_BOOL, false, ON, &blanklines_after_declarations }, 86 {"bap", PRO_BOOL, false, ON, &blanklines_after_procs }, 87 {"bbb", PRO_BOOL, false, ON, &blanklines_before_blockcomments }, 88 {"bc", PRO_BOOL, true, OFF, &ps.leave_comma }, 89 {"bl", PRO_BOOL, true, OFF, &btype_2 }, 90 {"br", PRO_BOOL, true, ON, &btype_2 }, 91 {"bs", PRO_BOOL, false, ON, &Bill_Shannon }, 92 {"cdb", PRO_BOOL, true, ON, &comment_delimiter_on_blankline }, 93 {"cd", PRO_INT, 0, 0, &ps.decl_com_ind }, 94 {"ce", PRO_BOOL, true, ON, &cuddle_else }, 95 {"ci", PRO_INT, 0, 0, &continuation_indent }, 96 {"cli", PRO_SPECIAL, 0, CLI, 0 }, 97 {"c", PRO_INT, 33, 0, &ps.com_ind }, 98 {"di", PRO_INT, 16, 0, &ps.decl_indent }, 99 {"dj", PRO_BOOL, false, ON, &ps.ljust_decl }, 100 {"d", PRO_INT, 0, 0, &ps.unindent_displace }, 101 {"eei", PRO_BOOL, false, ON, &extra_expression_indent }, 102 {"ei", PRO_BOOL, true, ON, &ps.else_if }, 103 {"fbc", PRO_FONT, 0, 0, (int *) &blkcomf }, 104 {"fbx", PRO_FONT, 0, 0, (int *) &boxcomf }, 105 {"fb", PRO_FONT, 0, 0, (int *) &bodyf }, 106 {"fc1", PRO_BOOL, true, ON, &format_col1_comments }, 107 {"fc", PRO_FONT, 0, 0, (int *) &scomf }, 108 {"fk", PRO_FONT, 0, 0, (int *) &keywordf }, 109 {"fs", PRO_FONT, 0, 0, (int *) &stringf }, 110 {"ip", PRO_BOOL, true, ON, &ps.indent_parameters }, 111 {"i", PRO_INT, 8, 0, &ps.ind_size }, 112 {"lc", PRO_INT, 0, 0, &block_comment_max_col }, 113 {"lp", PRO_BOOL, true, ON, &lineup_to_parens }, 114 {"l", PRO_INT, 78, 0, &max_col }, 115 {"nbacc", PRO_BOOL, false, OFF, 116 &blanklines_around_conditional_compilation }, 117 {"nbadp", PRO_BOOL, false, OFF, 118 &blanklines_after_declarations_at_proctop }, 119 {"nbad", PRO_BOOL, false, OFF, &blanklines_after_declarations }, 120 {"nbap", PRO_BOOL, false, OFF, &blanklines_after_procs }, 121 {"nbbb", PRO_BOOL, false, OFF, &blanklines_before_blockcomments }, 122 {"nbc", PRO_BOOL, true, ON, &ps.leave_comma }, 123 {"nbs", PRO_BOOL, false, OFF, &Bill_Shannon }, 124 {"ncdb", PRO_BOOL, true, OFF, &comment_delimiter_on_blankline }, 125 {"nce", PRO_BOOL, true, OFF, &cuddle_else }, 126 {"ndj", PRO_BOOL, false, OFF, &ps.ljust_decl }, 127 {"neei", PRO_BOOL, false, OFF, &extra_expression_indent }, 128 {"nei", PRO_BOOL, true, OFF, &ps.else_if }, 129 {"nfc1", PRO_BOOL, true, OFF, &format_col1_comments }, 130 {"nip", PRO_BOOL, true, OFF, &ps.indent_parameters }, 131 {"nlp", PRO_BOOL, true, OFF, &lineup_to_parens }, 132 {"npcs", PRO_BOOL, false, OFF, &proc_calls_space }, 133 {"npro", PRO_SPECIAL, 0, IGN, 0 }, 134 {"npsl", PRO_BOOL, true, OFF, &procnames_start_line }, 135 {"nps", PRO_BOOL, false, OFF, &pointer_as_binop }, 136 {"nsc", PRO_BOOL, true, OFF, &star_comment_cont }, 137 {"nsob", PRO_BOOL, false, OFF, &swallow_optional_blanklines }, 138 {"nv", PRO_BOOL, false, OFF, &verbose }, 139 {"pcs", PRO_BOOL, false, ON, &proc_calls_space }, 140 {"psl", PRO_BOOL, true, ON, &procnames_start_line }, 141 {"ps", PRO_BOOL, false, ON, &pointer_as_binop }, 142 {"sc", PRO_BOOL, true, ON, &star_comment_cont }, 143 {"sob", PRO_BOOL, false, ON, &swallow_optional_blanklines }, 144 {"st", PRO_SPECIAL, 0, STDIN, 0 }, 145 {"troff", PRO_BOOL, false, ON, &troff }, 146 {"v", PRO_BOOL, false, ON, &verbose }, 147 /* whew! */ 148 { 0, 0, 0, 0, 0 } 149 }; 150 151 void scan_profile(FILE *); 152 void set_option(char *); 153 154 /* 155 * set_profile reads $HOME/.indent.pro and ./.indent.pro and handles arguments 156 * given in these files. 157 */ 158 void 159 set_profile(void) 160 { 161 FILE *f; 162 char fname[BUFSIZ]; 163 char *home; 164 static char prof[] = ".indent.pro"; 165 166 home = getenv("HOME"); 167 if (home != NULL && *home != '\0') { 168 if (snprintf(fname, sizeof fname, "%s/%s", home, prof) >= sizeof fname) { 169 warnx("%s/%s: %s", home, prof, strerror(ENAMETOOLONG)); 170 return; 171 } 172 if ((f = fopen(option_source = fname, "r")) != NULL) { 173 scan_profile(f); 174 (void) fclose(f); 175 } 176 } 177 if ((f = fopen(option_source = prof, "r")) != NULL) { 178 scan_profile(f); 179 (void) fclose(f); 180 } 181 option_source = "Command line"; 182 } 183 184 void 185 scan_profile(FILE *f) 186 { 187 int i; 188 char *p; 189 char buf[BUFSIZ]; 190 191 while (1) { 192 for (p = buf; 193 (i = getc(f)) != EOF && (*p = i) > ' ' && p + 1 - buf < BUFSIZ; 194 ++p) 195 ; 196 if (p != buf) { 197 *p = 0; 198 if (verbose) 199 printf("profile: %s\n", buf); 200 set_option(buf); 201 } 202 else if (i == EOF) 203 return; 204 } 205 } 206 207 char *param_start; 208 209 int 210 eqin(char *s1, char *s2) 211 { 212 while (*s1) { 213 if (*s1++ != *s2++) 214 return (false); 215 } 216 param_start = s2; 217 return (true); 218 } 219 220 /* 221 * Set the defaults. 222 */ 223 void 224 set_defaults(void) 225 { 226 struct pro *p; 227 228 /* 229 * Because ps.case_indent is a float, we can't initialize it from the 230 * table: 231 */ 232 ps.case_indent = 0.0; /* -cli0.0 */ 233 for (p = pro; p->p_name; p++) 234 if (p->p_type != PRO_SPECIAL && p->p_type != PRO_FONT) 235 *p->p_obj = p->p_default; 236 } 237 238 void 239 set_option(char *arg) 240 { 241 struct pro *p; 242 243 arg++; /* ignore leading "-" */ 244 for (p = pro; p->p_name; p++) 245 if (*p->p_name == *arg && eqin(p->p_name, arg)) 246 goto found; 247 errx(1, "%s: unknown parameter \"%s\"", option_source, arg - 1); 248 found: 249 switch (p->p_type) { 250 251 case PRO_SPECIAL: 252 switch (p->p_special) { 253 254 case IGN: 255 break; 256 257 case CLI: 258 if (*param_start == 0) 259 goto need_param; 260 ps.case_indent = atof(param_start); 261 break; 262 263 case STDIN: 264 if (input == 0) 265 input = stdin; 266 if (output == 0) 267 output = stdout; 268 break; 269 270 case KEY: 271 if (*param_start == 0) 272 goto need_param; 273 { 274 char *str; 275 if ((str = strdup(param_start)) == NULL) 276 err(1, NULL); 277 addkey(str, 4); 278 } 279 break; 280 281 default: 282 errx(1, "set_option: internal error: p_special %d", p->p_special); 283 } 284 break; 285 286 case PRO_BOOL: 287 if (p->p_special == OFF) 288 *p->p_obj = false; 289 else 290 *p->p_obj = true; 291 break; 292 293 case PRO_INT: 294 if (!isdigit(*param_start)) { 295 need_param: 296 errx(1, "%s: ``%s'' requires a parameter", option_source, arg - 1); 297 } 298 *p->p_obj = atoi(param_start); 299 if (*p->p_name == 'i' && *p->p_obj <= 0) 300 errx(1, "%s: ``%s must be greater of zero''", 301 option_source, arg - 1); 302 break; 303 304 case PRO_FONT: 305 parsefont((struct fstate *) p->p_obj, param_start); 306 break; 307 308 default: 309 errx(1, "set_option: internal error: p_type %d", p->p_type); 310 } 311 } 312