usr.bin/indent/args.c

   1 /*
   2  * Copyright (c) 1985 Sun Microsystems, Inc.
   3  * Copyright (c) 1980, 1993
   4  *      The Regents of the University of California.  All rights reserved.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  * @(#)args.c   8.1 (Berkeley) 6/6/93
  36  * $FreeBSD: src/usr.bin/indent/args.c,v 1.15 2004/09/19 20:34:30 das Exp $
  37  * $DragonFly: src/usr.bin/indent/args.c,v 1.3 2005/04/10 20:55:38 drhodus Exp $
  38  */
  39
  40 /*
  41  * Argument scanning and profile reading code.  Default parameters are set
  42  * here as well.
  43  */
  44
  45 #include <ctype.h>
  46 #include <err.h>
  47 #include <limits.h>
  48 #include <stdio.h>
  49 #include <stdlib.h>
  50 #include <string.h>
  51 #include "indent_globs.h"
  52 #include "indent.h"
  53
  54 /* profile types */
  55 #define PRO_SPECIAL     1       /* special case */
  56 #define PRO_BOOL        2       /* boolean */
  57 #define PRO_INT         3       /* integer */
  58 #define PRO_FONT        4       /* troff font */
  59
  60 /* profile specials for booleans */
  61 #define ON              1       /* turn it on */
  62 #define OFF             0       /* turn it off */
  63
  64 /* profile specials for specials */
  65 #define IGN             1       /* ignore it */
  66 #define CLI             2       /* case label indent (float) */
  67 #define STDIN           3       /* use stdin */
  68 #define KEY             4       /* type (keyword) */
  69
  70 static void scan_profile(FILE *);
  71
  72 const char *option_source = "?";
  73
  74 /*
  75  * N.B.: because of the way the table here is scanned, options whose names are
  76  * substrings of other options must occur later; that is, with -lp vs -l, -lp
  77  * must be first.  Also, while (most) booleans occur more than once, the last
  78  * default value is the one actually assigned.
  79  */
  80 struct pro {
  81     const char *p_name;         /* name, e.g. -bl, -cli */
  82     int         p_type;         /* type (int, bool, special) */
  83     int         p_default;      /* the default value (if int) */
  84     int         p_special;      /* depends on type */
  85     int        *p_obj;          /* the associated variable */
  86 }           pro[] = {
  87
  88     {"T", PRO_SPECIAL, 0, KEY, 0},
  89     {"bacc", PRO_BOOL, false, ON, &blanklines_around_conditional_compilation},
  90     {"badp", PRO_BOOL, false, ON, &blanklines_after_declarations_at_proctop},
  91     {"bad", PRO_BOOL, false, ON, &blanklines_after_declarations},
  92     {"bap", PRO_BOOL, false, ON, &blanklines_after_procs},
  93     {"bbb", PRO_BOOL, false, ON, &blanklines_before_blockcomments},
  94     {"bc", PRO_BOOL, true, OFF, &ps.leave_comma},
  95     {"bl", PRO_BOOL, true, OFF, &btype_2},
  96     {"br", PRO_BOOL, true, ON, &btype_2},
  97     {"bs", PRO_BOOL, false, ON, &Bill_Shannon},
  98     {"cdb", PRO_BOOL, true, ON, &comment_delimiter_on_blankline},
  99     {"cd", PRO_INT, 0, 0, &ps.decl_com_ind},
 100     {"ce", PRO_BOOL, true, ON, &cuddle_else},
 101     {"ci", PRO_INT, 0, 0, &continuation_indent},
 102     {"cli", PRO_SPECIAL, 0, CLI, 0},
 103     {"c", PRO_INT, 33, 0, &ps.com_ind},
 104     {"di", PRO_INT, 16, 0, &ps.decl_indent},
 105     {"dj", PRO_BOOL, false, ON, &ps.ljust_decl},
 106     {"d", PRO_INT, 0, 0, &ps.unindent_displace},
 107     {"eei", PRO_BOOL, false, ON, &extra_expression_indent},
 108     {"ei", PRO_BOOL, true, ON, &ps.else_if},
 109     {"fbc", PRO_FONT, 0, 0, (int *) &blkcomf},
 110     {"fbs", PRO_BOOL, true, ON, &function_brace_split},
 111     {"fbx", PRO_FONT, 0, 0, (int *) &boxcomf},
 112     {"fb", PRO_FONT, 0, 0, (int *) &bodyf},
 113     {"fc1", PRO_BOOL, true, ON, &format_col1_comments},
 114     {"fcb", PRO_BOOL, true, ON, &format_block_comments},
 115     {"fc", PRO_FONT, 0, 0, (int *) &scomf},
 116     {"fk", PRO_FONT, 0, 0, (int *) &keywordf},
 117     {"fs", PRO_FONT, 0, 0, (int *) &stringf},
 118     {"ip", PRO_BOOL, true, ON, &ps.indent_parameters},
 119     {"i", PRO_INT, 8, 0, &ps.ind_size},
 120     {"lc", PRO_INT, 0, 0, &block_comment_max_col},
 121     {"ldi", PRO_INT, -1, 0, &ps.local_decl_indent},
 122     {"lp", PRO_BOOL, true, ON, &lineup_to_parens},
 123     {"l", PRO_INT, 78, 0, &max_col},
 124     {"nbacc", PRO_BOOL, false, OFF, &blanklines_around_conditional_compilation},
 125     {"nbadp", PRO_BOOL, false, OFF, &blanklines_after_declarations_at_proctop},
 126     {"nbad", PRO_BOOL, false, OFF, &blanklines_after_declarations},
 127     {"nbap", PRO_BOOL, false, OFF, &blanklines_after_procs},
 128     {"nbbb", PRO_BOOL, false, OFF, &blanklines_before_blockcomments},
 129     {"nbc", PRO_BOOL, true, ON, &ps.leave_comma},
 130     {"nbs", PRO_BOOL, false, OFF, &Bill_Shannon},
 131     {"ncdb", PRO_BOOL, true, OFF, &comment_delimiter_on_blankline},
 132     {"nce", PRO_BOOL, true, OFF, &cuddle_else},
 133     {"ndj", PRO_BOOL, false, OFF, &ps.ljust_decl},
 134     {"neei", PRO_BOOL, false, OFF, &extra_expression_indent},
 135     {"nei", PRO_BOOL, true, OFF, &ps.else_if},
 136     {"nfbs", PRO_BOOL, true, OFF, &function_brace_split},
 137     {"nfc1", PRO_BOOL, true, OFF, &format_col1_comments},
 138     {"nfcb", PRO_BOOL, true, OFF, &format_block_comments},
 139     {"nip", PRO_BOOL, true, OFF, &ps.indent_parameters},
 140     {"nlp", PRO_BOOL, true, OFF, &lineup_to_parens},
 141     {"npcs", PRO_BOOL, false, OFF, &proc_calls_space},
 142     {"npro", PRO_SPECIAL, 0, IGN, 0},
 143     {"npsl", PRO_BOOL, true, OFF, &procnames_start_line},
 144     {"nps", PRO_BOOL, false, OFF, &pointer_as_binop},
 145     {"nsc", PRO_BOOL, true, OFF, &star_comment_cont},
 146     {"nsob", PRO_BOOL, false, OFF, &swallow_optional_blanklines},
 147     {"nut", PRO_BOOL, true, OFF, &use_tabs},
 148     {"nv", PRO_BOOL, false, OFF, &verbose},
 149     {"pcs", PRO_BOOL, false, ON, &proc_calls_space},
 150     {"psl", PRO_BOOL, true, ON, &procnames_start_line},
 151     {"ps", PRO_BOOL, false, ON, &pointer_as_binop},
 152     {"sc", PRO_BOOL, true, ON, &star_comment_cont},
 153     {"sob", PRO_BOOL, false, ON, &swallow_optional_blanklines},
 154     {"st", PRO_SPECIAL, 0, STDIN, 0},
 155     {"troff", PRO_BOOL, false, ON, &troff},
 156     {"ut", PRO_BOOL, true, ON, &use_tabs},
 157     {"v", PRO_BOOL, false, ON, &verbose},
 158     /* whew! */
 159     {0, 0, 0, 0, 0}
 160 };
 161
 162 /*
 163  * set_profile reads $HOME/.indent.pro and ./.indent.pro and handles arguments
 164  * given in these files.
 165  */
 166 void
 167 set_profile(void)
 168 {
 169     FILE *f;
 170     char fname[PATH_MAX];
 171     static char prof[] = ".indent.pro";
 172
 173     snprintf(fname, sizeof(fname), "%s/%s", getenv("HOME"), prof);
 174     if ((f = fopen(option_source = fname, "r")) != NULL) {
 175         scan_profile(f);
 176         (void) fclose(f);
 177     }
 178     if ((f = fopen(option_source = prof, "r")) != NULL) {
 179         scan_profile(f);
 180         (void) fclose(f);
 181     }
 182     option_source = "Command line";
 183 }
 184
 185 static void
 186 scan_profile(FILE *f)
 187 {
 188     int         comment, i;
 189     char *p;
 190     char        buf[BUFSIZ];
 191
 192     while (1) {
 193         p = buf;
 194         comment = 0;
 195         while ((i = getc(f)) != EOF) {
 196             if (i == '*' && !comment && p > buf && p[-1] == '/') {
 197                 comment = p - buf;
 198                 *p++ = i;
 199             } else if (i == '/' && comment && p > buf && p[-1] == '*') {
 200                 p = buf + comment - 1;
 201                 comment = 0;
 202             } else if (isspace(i)) {
 203                 if (p > buf && !comment)
 204                     break;
 205             } else {
 206                 *p++ = i;
 207             }
 208         }
 209         if (p != buf) {
 210             *p++ = 0;
 211             if (verbose)
 212                 printf("profile: %s\n", buf);
 213             set_option(buf);
 214         }
 215         else if (i == EOF)
 216             return;
 217     }
 218 }
 219
 220 const char      *param_start;
 221
 222 static int
 223 eqin(const char *s1, const char *s2)
 224 {
 225     while (*s1) {
 226         if (*s1++ != *s2++)
 227             return (false);
 228     }
 229     param_start = s2;
 230     return (true);
 231 }
 232
 233 /*
 234  * Set the defaults.
 235  */
 236 void
 237 set_defaults(void)
 238 {
 239     struct pro *p;
 240
 241     /*
 242      * Because ps.case_indent is a float, we can't initialize it from the
 243      * table:
 244      */
 245     ps.case_indent = 0.0;       /* -cli0.0 */
 246     for (p = pro; p->p_name; p++)
 247         if (p->p_type != PRO_SPECIAL && p->p_type != PRO_FONT)
 248             *p->p_obj = p->p_default;
 249 }
 250
 251 void
 252 set_option(char *arg)
 253 {
 254     struct pro *p;
 255
 256     arg++;                      /* ignore leading "-" */
 257     for (p = pro; p->p_name; p++)
 258         if (*p->p_name == *arg && eqin(p->p_name, arg))
 259             goto found;
 260     errx(1, "%s: unknown parameter \"%s\"", option_source, arg - 1);
 261 found:
 262     switch (p->p_type) {
 263
 264     case PRO_SPECIAL:
 265         switch (p->p_special) {
 266
 267         case IGN:
 268             break;
 269
 270         case CLI:
 271             if (*param_start == 0)
 272                 goto need_param;
 273             ps.case_indent = atof(param_start);
 274             break;
 275
 276         case STDIN:
 277             if (input == 0)
 278                 input = stdin;
 279             if (output == 0)
 280                 output = stdout;
 281             break;
 282
 283         case KEY:
 284             if (*param_start == 0)
 285                 goto need_param;
 286             {
 287                 char *str = strdup(param_start);
 288                 if (str == NULL)
 289                         err(1, NULL);
 290                 addkey(str, 4);
 291             }
 292             break;
 293
 294         default:
 295             errx(1, "set_option: internal error: p_special %d", p->p_special);
 296         }
 297         break;
 298
 299     case PRO_BOOL:
 300         if (p->p_special == OFF)
 301             *p->p_obj = false;
 302         else
 303             *p->p_obj = true;
 304         break;
 305
 306     case PRO_INT:
 307         if (!isdigit(*param_start)) {
 308     need_param:
 309             errx(1, "%s: ``%s'' requires a parameter", option_source, arg - 1);
 310         }
 311         *p->p_obj = atoi(param_start);
 312         break;
 313
 314     case PRO_FONT:
 315         parsefont((struct fstate *) p->p_obj, param_start);
 316         break;
 317
 318     default:
 319         errx(1, "set_option: internal error: p_type %d", p->p_type);
 320     }
 321 }