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
  36 #if 0
  37 #ifndef lint
  38 static char sccsid[] = "@(#)args.c      8.1 (Berkeley) 6/6/93";
  39 #endif /* not lint */
  40 #endif
  41
  42 #include <sys/cdefs.h>
  43 __FBSDID("$FreeBSD$");
  44
  45 /*
  46  * Argument scanning and profile reading code.  Default parameters are set
  47  * here as well.
  48  */
  49
  50 #include <ctype.h>
  51 #include <err.h>
  52 #include <limits.h>
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55 #include <string.h>
  56 #include "indent_globs.h"
  57 #include "indent.h"
  58
  59 /* profile types */
  60 #define PRO_SPECIAL     1       /* special case */
  61 #define PRO_BOOL        2       /* boolean */
  62 #define PRO_INT         3       /* integer */
  63 #define PRO_FONT        4       /* troff font */
  64
  65 /* profile specials for booleans */
  66 #define ON              1       /* turn it on */
  67 #define OFF             0       /* turn it off */
  68
  69 /* profile specials for specials */
  70 #define IGN             1       /* ignore it */
  71 #define CLI             2       /* case label indent (float) */
  72 #define STDIN           3       /* use stdin */
  73 #define KEY             4       /* type (keyword) */
  74
  75 static void scan_profile(FILE *);
  76
  77 const char *option_source = "?";
  78
  79 /*
  80  * N.B.: because of the way the table here is scanned, options whose names are
  81  * substrings of other options must occur later; that is, with -lp vs -l, -lp
  82  * must be first.  Also, while (most) booleans occur more than once, the last
  83  * default value is the one actually assigned.
  84  */
  85 struct pro {
  86     const char *p_name;         /* name, e.g. -bl, -cli */
  87     int         p_type;         /* type (int, bool, special) */
  88     int         p_default;      /* the default value (if int) */
  89     int         p_special;      /* depends on type */
  90     int        *p_obj;          /* the associated variable */
  91 }           pro[] = {
  92
  93     {"T", PRO_SPECIAL, 0, KEY, 0},
  94     {"bacc", PRO_BOOL, false, ON, &blanklines_around_conditional_compilation},
  95     {"badp", PRO_BOOL, false, ON, &blanklines_after_declarations_at_proctop},
  96     {"bad", PRO_BOOL, false, ON, &blanklines_after_declarations},
  97     {"bap", PRO_BOOL, false, ON, &blanklines_after_procs},
  98     {"bbb", PRO_BOOL, false, ON, &blanklines_before_blockcomments},
  99     {"bc", PRO_BOOL, true, OFF, &ps.leave_comma},
 100     {"bl", PRO_BOOL, true, OFF, &btype_2},
 101     {"br", PRO_BOOL, true, ON, &btype_2},
 102     {"bs", PRO_BOOL, false, ON, &Bill_Shannon},
 103     {"cdb", PRO_BOOL, true, ON, &comment_delimiter_on_blankline},
 104     {"cd", PRO_INT, 0, 0, &ps.decl_com_ind},
 105     {"ce", PRO_BOOL, true, ON, &cuddle_else},
 106     {"ci", PRO_INT, 0, 0, &continuation_indent},
 107     {"cli", PRO_SPECIAL, 0, CLI, 0},
 108     {"c", PRO_INT, 33, 0, &ps.com_ind},
 109     {"di", PRO_INT, 16, 0, &ps.decl_indent},
 110     {"dj", PRO_BOOL, false, ON, &ps.ljust_decl},
 111     {"d", PRO_INT, 0, 0, &ps.unindent_displace},
 112     {"eei", PRO_BOOL, false, ON, &extra_expression_indent},
 113     {"ei", PRO_BOOL, true, ON, &ps.else_if},
 114     {"fbc", PRO_FONT, 0, 0, (int *) &blkcomf},
 115     {"fbs", PRO_BOOL, true, ON, &function_brace_split},
 116     {"fbx", PRO_FONT, 0, 0, (int *) &boxcomf},
 117     {"fb", PRO_FONT, 0, 0, (int *) &bodyf},
 118     {"fc1", PRO_BOOL, true, ON, &format_col1_comments},
 119     {"fcb", PRO_BOOL, true, ON, &format_block_comments},
 120     {"fc", PRO_FONT, 0, 0, (int *) &scomf},
 121     {"fk", PRO_FONT, 0, 0, (int *) &keywordf},
 122     {"fs", PRO_FONT, 0, 0, (int *) &stringf},
 123     {"ip", PRO_BOOL, true, ON, &ps.indent_parameters},
 124     {"i", PRO_INT, 8, 0, &ps.ind_size},
 125     {"lc", PRO_INT, 0, 0, &block_comment_max_col},
 126     {"ldi", PRO_INT, -1, 0, &ps.local_decl_indent},
 127     {"lp", PRO_BOOL, true, ON, &lineup_to_parens},
 128     {"l", PRO_INT, 78, 0, &max_col},
 129     {"nbacc", PRO_BOOL, false, OFF, &blanklines_around_conditional_compilation},
 130     {"nbadp", PRO_BOOL, false, OFF, &blanklines_after_declarations_at_proctop},
 131     {"nbad", PRO_BOOL, false, OFF, &blanklines_after_declarations},
 132     {"nbap", PRO_BOOL, false, OFF, &blanklines_after_procs},
 133     {"nbbb", PRO_BOOL, false, OFF, &blanklines_before_blockcomments},
 134     {"nbc", PRO_BOOL, true, ON, &ps.leave_comma},
 135     {"nbs", PRO_BOOL, false, OFF, &Bill_Shannon},
 136     {"ncdb", PRO_BOOL, true, OFF, &comment_delimiter_on_blankline},
 137     {"nce", PRO_BOOL, true, OFF, &cuddle_else},
 138     {"ndj", PRO_BOOL, false, OFF, &ps.ljust_decl},
 139     {"neei", PRO_BOOL, false, OFF, &extra_expression_indent},
 140     {"nei", PRO_BOOL, true, OFF, &ps.else_if},
 141     {"nfbs", PRO_BOOL, true, OFF, &function_brace_split},
 142     {"nfc1", PRO_BOOL, true, OFF, &format_col1_comments},
 143     {"nfcb", PRO_BOOL, true, OFF, &format_block_comments},
 144     {"nip", PRO_BOOL, true, OFF, &ps.indent_parameters},
 145     {"nlp", PRO_BOOL, true, OFF, &lineup_to_parens},
 146     {"npcs", PRO_BOOL, false, OFF, &proc_calls_space},
 147     {"npro", PRO_SPECIAL, 0, IGN, 0},
 148     {"npsl", PRO_BOOL, true, OFF, &procnames_start_line},
 149     {"nps", PRO_BOOL, false, OFF, &pointer_as_binop},
 150     {"nsc", PRO_BOOL, true, OFF, &star_comment_cont},
 151     {"nsob", PRO_BOOL, false, OFF, &swallow_optional_blanklines},
 152     {"nut", PRO_BOOL, true, OFF, &use_tabs},
 153     {"nv", PRO_BOOL, false, OFF, &verbose},
 154     {"pcs", PRO_BOOL, false, ON, &proc_calls_space},
 155     {"psl", PRO_BOOL, true, ON, &procnames_start_line},
 156     {"ps", PRO_BOOL, false, ON, &pointer_as_binop},
 157     {"sc", PRO_BOOL, true, ON, &star_comment_cont},
 158     {"sob", PRO_BOOL, false, ON, &swallow_optional_blanklines},
 159     {"st", PRO_SPECIAL, 0, STDIN, 0},
 160     {"ta", PRO_BOOL, false, ON, &auto_typedefs},
 161     {"troff", PRO_BOOL, false, ON, &troff},
 162     {"ut", PRO_BOOL, true, ON, &use_tabs},
 163     {"v", PRO_BOOL, false, ON, &verbose},
 164     /* whew! */
 165     {0, 0, 0, 0, 0}
 166 };
 167
 168 /*
 169  * set_profile reads $HOME/.indent.pro and ./.indent.pro and handles arguments
 170  * given in these files.
 171  */
 172 void
 173 set_profile(void)
 174 {
 175     FILE *f;
 176     char fname[PATH_MAX];
 177     static char prof[] = ".indent.pro";
 178
 179     snprintf(fname, sizeof(fname), "%s/%s", getenv("HOME"), prof);
 180     if ((f = fopen(option_source = fname, "r")) != NULL) {
 181         scan_profile(f);
 182         (void) fclose(f);
 183     }
 184     if ((f = fopen(option_source = prof, "r")) != NULL) {
 185         scan_profile(f);
 186         (void) fclose(f);
 187     }
 188     option_source = "Command line";
 189 }
 190
 191 static void
 192 scan_profile(FILE *f)
 193 {
 194     int         comment, i;
 195     char        *p;
 196     char        buf[BUFSIZ];
 197
 198     while (1) {
 199         p = buf;
 200         comment = 0;
 201         while ((i = getc(f)) != EOF) {
 202             if (i == '*' && !comment && p > buf && p[-1] == '/') {
 203                 comment = p - buf;
 204                 *p++ = i;
 205             } else if (i == '/' && comment && p > buf && p[-1] == '*') {
 206                 p = buf + comment - 1;
 207                 comment = 0;
 208             } else if (isspace(i)) {
 209                 if (p > buf && !comment)
 210                     break;
 211             } else {
 212                 *p++ = i;
 213             }
 214         }
 215         if (p != buf) {
 216             *p++ = 0;
 217             if (verbose)
 218                 printf("profile: %s\n", buf);
 219             set_option(buf);
 220         }
 221         else if (i == EOF)
 222             return;
 223     }
 224 }
 225
 226 static const char *
 227 eqin(const char *s1, const char *s2)
 228 {
 229     while (*s1) {
 230         if (*s1++ != *s2++)
 231             return (NULL);
 232     }
 233     return (s2);
 234 }
 235
 236 /*
 237  * Set the defaults.
 238  */
 239 void
 240 set_defaults(void)
 241 {
 242     struct pro *p;
 243
 244     /*
 245      * Because ps.case_indent is a float, we can't initialize it from the
 246      * table:
 247      */
 248     ps.case_indent = 0.0;       /* -cli0.0 */
 249     for (p = pro; p->p_name; p++)
 250         if (p->p_type != PRO_SPECIAL && p->p_type != PRO_FONT)
 251             *p->p_obj = p->p_default;
 252 }
 253
 254 void
 255 set_option(char *arg)
 256 {
 257     struct      pro *p;
 258     const char  *param_start;
 259
 260     arg++;                      /* ignore leading "-" */
 261     for (p = pro; p->p_name; p++)
 262         if (*p->p_name == *arg && (param_start = eqin(p->p_name, arg)) != NULL)
 263             goto found;
 264     errx(1, "%s: unknown parameter \"%s\"", option_source, arg - 1);
 265 found:
 266     switch (p->p_type) {
 267
 268     case PRO_SPECIAL:
 269         switch (p->p_special) {
 270
 271         case IGN:
 272             break;
 273
 274         case CLI:
 275             if (*param_start == 0)
 276                 goto need_param;
 277             ps.case_indent = atof(param_start);
 278             break;
 279
 280         case STDIN:
 281             if (input == NULL)
 282                 input = stdin;
 283             if (output == NULL)
 284                 output = stdout;
 285             break;
 286
 287         case KEY:
 288             if (*param_start == 0)
 289                 goto need_param;
 290             {
 291                 char *str = strdup(param_start);
 292                 if (str == NULL)
 293                         err(1, NULL);
 294                 addkey(str, 4);
 295             }
 296             break;
 297
 298         default:
 299             errx(1, "set_option: internal error: p_special %d", p->p_special);
 300         }
 301         break;
 302
 303     case PRO_BOOL:
 304         if (p->p_special == OFF)
 305             *p->p_obj = false;
 306         else
 307             *p->p_obj = true;
 308         break;
 309
 310     case PRO_INT:
 311         if (!isdigit(*param_start)) {
 312     need_param:
 313             errx(1, "%s: ``%s'' requires a parameter", option_source, arg - 1);
 314         }
 315         *p->p_obj = atoi(param_start);
 316         break;
 317
 318     case PRO_FONT:
 319         parsefont((struct fstate *) p->p_obj, param_start);
 320         break;
 321
 322     default:
 323         errx(1, "set_option: internal error: p_type %d", p->p_type);
 324     }
 325 }