soltools/cpp/_include.c

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #if (defined(_WIN32) || defined(__IBMC__))
  21 #   include <io.h>
  22 #else
  23 #   include <unistd.h>
  24 #endif
  25
  26 #ifdef _MSC_VER
  27 #   define _POSIX_
  28 #endif
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <fcntl.h>
  33
  34 #if defined(__IBMC__) || defined(__EMX__)
  35 #   include <fcntl.h>
  36 #   define PATH_MAX _MAX_PATH
  37 #endif
  38 #include <limits.h>
  39
  40 #include "cpp.h"
  41
  42 Includelist includelist[NINCLUDE];
  43 Wraplist wraplist[NINCLUDE];
  44
  45 void
  46     doinclude(Tokenrow * trp, int depth, int import)
  47 {
  48     char fname[PATH_MAX], iname[PATH_MAX];
  49     Includelist *ip;
  50     int angled, fd, i;
  51     size_t len;
  52
  53     trp->tp += 1;
  54     if (trp->tp >= trp->lp)
  55         goto syntax;
  56     if (trp->tp->type != STRING && trp->tp->type != LT)
  57     {
  58         len = trp->tp - trp->bp;
  59         expandrow(trp, "<include>");
  60         trp->tp = trp->bp + len;
  61     }
  62     if (trp->tp->type == STRING)
  63     {
  64         len = trp->tp->len - 2;
  65         if (len > sizeof(fname) - 1)
  66             len = sizeof(fname) - 1;
  67         strncpy(fname, (char *) trp->tp->t + 1, len);
  68         angled = 0;
  69     }
  70     else
  71     {
  72         if (trp->tp->type == LT)
  73         {
  74             len = 0;
  75             trp->tp++;
  76             while (trp->tp->type != GT)
  77             {
  78                 if (trp->tp > trp->lp || len + trp->tp->len + 2 >= sizeof(fname))
  79                     goto syntax;
  80                 strncpy(fname + len, (char *) trp->tp->t, trp->tp->len);
  81                 len += trp->tp->len;
  82                 trp->tp++;
  83             }
  84             angled = 1;
  85         }
  86         else
  87             goto syntax;
  88     }
  89     trp->tp += 2;
  90     if (trp->tp < trp->lp || len == 0)
  91         goto syntax;
  92     fname[len] = '\0';
  93     if (fname[0] == '/')
  94     {
  95         fd = open(fname, O_RDONLY);
  96         strcpy(iname, fname);
  97     }
  98     else
  99     {
 100         for (fd = -1, i = (depth < 0) ? (NINCLUDE - 1) : (depth - 1); i >= 0; i--)
 101         {
 102             ip = &includelist[i];
 103             if (ip->file == NULL || ip->deleted || (angled && ip->always == 0))
 104                 continue;
 105             if (strlen(fname) + strlen(ip->file) + 2 > sizeof(iname))
 106                 continue;
 107             strcpy(iname, ip->file);
 108             strcat(iname, "/");
 109             strcat(iname, fname);
 110             if ((fd = open(iname, O_RDONLY)) >= 0)
 111                 break;
 112         }
 113     }
 114
 115     if (fd >= 0)
 116     {
 117         if (++incdepth > NINC )
 118             error(FATAL, "#%s too deeply nested", import ? "import" : "include");
 119         if (Xflag)
 120             genimport(fname, angled, iname, import);
 121          if (Iflag)
 122             error(INFO, "Open %s file [%s]", import ? "import" : "include", iname );
 123
 124         for (i = NINCLUDE - 1; i >= 0; i--)
 125         {
 126             if ((wraplist[i].file != NULL) &&
 127                 (strncmp(wraplist[i].file, iname, strlen(wraplist[i].file)) == 0))
 128                 break;
 129         }
 130
 131         setsource((char *) newstring((uchar *) iname, strlen(iname), 0), i, fd, NULL, (i >= 0) ? 1 : 0);
 132
 133         if (!Pflag)
 134             genline();
 135     }
 136     else
 137     {
 138         trp->tp = trp->bp + 2;
 139         error(ERROR, "Could not find %s file %r", import ? "import" : "include", trp);
 140     }
 141     return;
 142 syntax:
 143     error(ERROR, "Syntax error in #%s", import ? "import" : "include");
 144     return;
 145 }
 146
 147 /*
 148  * Generate a line directive for cursource
 149  */
 150 void
 151     genline(void)
 152 {
 153     static Token ta = {UNCLASS, 0, 0, 0, NULL, 0};
 154     static Tokenrow tr = {&ta, &ta, &ta + 1, 1};
 155     uchar *p;
 156
 157     ta.t = p = (uchar *) outptr;
 158     strcpy((char *) p, "#line ");
 159     p += sizeof("#line ") - 1;
 160     p = (uchar *) outnum((char *) p, cursource->line);
 161     *p++ = ' ';
 162     *p++ = '"';
 163     if (cursource->filename[0] != '/' && wd[0])
 164     {
 165         strcpy((char *) p, wd);
 166         p += strlen(wd);
 167         *p++ = '/';
 168     }
 169     strcpy((char *) p, cursource->filename);
 170     p += strlen((char *) p);
 171     *p++ = '"';
 172     *p++ = '\n';
 173     ta.len = (char *) p - outptr;
 174     outptr = (char *) p;
 175     tr.tp = tr.bp;
 176     puttokens(&tr);
 177 }
 178
 179 /*
 180  * Generate a pragma import/include directive
 181  */
 182 void
 183     genimport(char *fname, int angled, char *iname, int import)
 184 {
 185     static Token ta = {UNCLASS, 0, 0, 0, NULL, 0};
 186     static Tokenrow tr = {&ta, &ta, &ta + 1, 1};
 187     uchar *p;
 188
 189     ta.t = p = (uchar *) outptr;
 190
 191     if (import)
 192         strcpy((char *) p, "#pragma import");
 193     else
 194         strcpy((char *) p, "#pragma include");
 195
 196     p += strlen((char *) p);
 197
 198     *p++ = '(';
 199
 200     *p++ = angled ? '<' : '"';
 201     strcpy((char *) p, fname);
 202     p += strlen(fname);
 203     *p++ = angled ? '>' : '"';
 204
 205     *p++ = ',';
 206
 207     *p++ = '"';
 208     strcpy((char *) p, iname);
 209     p += strlen(iname);
 210     *p++ = '"';
 211
 212     *p++ = ')';
 213     *p++ = '\n';
 214
 215     ta.len = (char *) p - outptr;
 216     outptr = (char *) p;
 217     tr.tp = tr.bp;
 218     puttokens(&tr);
 219 }
 220
 221 /*
 222  * Generate a extern C directive
 223  */
 224 void
 225     genwrap(int end)
 226 {
 227     static Token ta = {UNCLASS, 0, 0, 0, NULL, 0};
 228     static Tokenrow tr = {&ta, &ta, &ta + 1, 1};
 229     uchar *p;
 230
 231     if (Cplusplus)
 232     {
 233         ta.t = p = (uchar *) outptr;
 234
 235         if (! end)
 236             strcpy((char *) p, "extern \"C\" {");
 237         else
 238             strcpy((char *) p, "}");
 239
 240         p += strlen((char *) p);
 241
 242         *p++ = '\n';
 243
 244         ta.len = (char *) p - outptr;
 245         outptr = (char *) p;
 246         tr.tp = tr.bp;
 247         puttokens(&tr);
 248     }
 249 }
 250
 251 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */