467 lines
12 KiB
C
467 lines
12 KiB
C
/* makedoc.c -- Make doc.c and funs.h from input files.
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$Id: makedoc.c,v 1.1.1.2 1998/03/22 20:42:43 law Exp $
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This file is part of GNU Info, a program for reading online documentation
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stored in Info format.
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Copyright (C) 1993, 97 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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Written by Brian Fox (bfox@ai.mit.edu). */
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/* This program grovels the contents of the source files passed as arguments
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and writes out a file of function pointers and documentation strings, and
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a header file which describes the contents. This only does the functions
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declared with DECLARE_INFO_COMMAND. */
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#include "info.h"
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static void fatal_file_error ();
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/* Name of the header file which receives the declarations of functions. */
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static char *funs_filename = "funs.h";
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/* Name of the documentation to function pointer file. */
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static char *doc_filename = "doc.c";
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static char *doc_header[] = {
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"/* doc.c -- Generated structure containing function names and doc strings.",
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"",
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" This file was automatically made from various source files with the",
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" command \"%s\". DO NOT EDIT THIS FILE, only \"%s.c\".",
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(char *)NULL
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};
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static char *doc_header_1[] = {
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" An entry in the array FUNCTION_DOC_ARRAY is made for each command",
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" found in the above files; each entry consists of a function pointer,",
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#if defined (NAMED_FUNCTIONS)
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" a string which is the user-visible name of the function,",
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#endif /* NAMED_FUNCTIONS */
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" and a string which documents its purpose. */",
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"",
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"#include \"doc.h\"",
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"#include \"funs.h\"",
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"",
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"FUNCTION_DOC function_doc_array[] = {",
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"",
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(char *)NULL
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};
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/* How to remember the locations of the functions found so that Emacs
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can use the information in a tag table. */
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typedef struct {
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char *name; /* Name of the tag. */
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int line; /* Line number at which it appears. */
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long char_offset; /* Character offset at which it appears. */
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} EMACS_TAG;
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typedef struct {
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char *filename; /* Name of the file containing entries. */
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long entrylen; /* Total number of characters in tag block. */
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EMACS_TAG **entries; /* Entries found in FILENAME. */
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int entries_index;
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int entries_slots;
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} EMACS_TAG_BLOCK;
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EMACS_TAG_BLOCK **emacs_tags = (EMACS_TAG_BLOCK **)NULL;
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int emacs_tags_index = 0;
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int emacs_tags_slots = 0;
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#define DECLARATION_STRING "\nDECLARE_INFO_COMMAND"
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static void process_one_file ();
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static void maybe_dump_tags ();
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static FILE *must_fopen ();
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int
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main (argc, argv)
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int argc;
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char **argv;
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{
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register int i;
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int tags_only = 0;
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FILE *funs_stream, *doc_stream;
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for (i = 1; i < argc; i++)
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if (strcmp (argv[i], "-tags") == 0)
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{
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tags_only++;
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break;
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}
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if (tags_only)
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{
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funs_filename = "/dev/null";
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doc_filename = "/dev/null";
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}
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funs_stream = must_fopen (funs_filename, "w");
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doc_stream = must_fopen (doc_filename, "w");
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fprintf (funs_stream,
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"/* %s -- Generated declarations for Info commands. */\n",
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funs_filename);
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for (i = 0; doc_header[i]; i++)
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{
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fprintf (doc_stream, doc_header[i], argv[0], argv[0]);
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fprintf (doc_stream, "\n");
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}
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fprintf (doc_stream,
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_(" Source files groveled to make this file include:\n\n"));
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for (i = 1; i < argc; i++)
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fprintf (doc_stream, "\t%s\n", argv[i]);
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fprintf (doc_stream, "\n");
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for (i = 0; doc_header_1[i]; i++)
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fprintf (doc_stream, "%s\n", doc_header_1[i]);
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for (i = 1; i < argc; i++)
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{
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char *curfile;
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curfile = argv[i];
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if (*curfile == '-')
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continue;
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fprintf (doc_stream, "/* Commands found in \"%s\". */\n", curfile);
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fprintf (funs_stream, "\n/* Functions declared in \"%s\". */\n",
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curfile);
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process_one_file (curfile, doc_stream, funs_stream);
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}
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fprintf (doc_stream,
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" { (VFunction *)NULL, (char *)NULL, (char *)NULL }\n};\n");
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fclose (funs_stream);
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fclose (doc_stream);
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if (tags_only)
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maybe_dump_tags (stdout);
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exit (0);
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}
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/* Dumping out the contents of an Emacs tags table. */
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static void
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maybe_dump_tags (stream)
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FILE *stream;
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{
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register int i;
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/* Print out the information for each block. */
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for (i = 0; i < emacs_tags_index; i++)
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{
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register int j;
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register EMACS_TAG_BLOCK *block;
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register EMACS_TAG *etag;
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long block_len;
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block_len = 0;
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block = emacs_tags[i];
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/* Calculate the length of the dumped block first. */
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for (j = 0; j < block->entries_index; j++)
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{
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char digits[30];
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etag = block->entries[j];
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block_len += 3 + strlen (etag->name);
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sprintf (digits, "%d,%ld", etag->line, etag->char_offset);
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block_len += strlen (digits);
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}
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/* Print out the defining line. */
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fprintf (stream, "\f\n%s,%ld\n", block->filename, block_len);
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/* Print out the individual tags. */
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for (j = 0; j < block->entries_index; j++)
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{
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etag = block->entries[j];
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fprintf (stream, "%s,\177%d,%ld\n",
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etag->name, etag->line, etag->char_offset);
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}
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}
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}
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/* Keeping track of names, line numbers and character offsets of functions
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found in source files. */
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static EMACS_TAG_BLOCK *
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make_emacs_tag_block (filename)
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char *filename;
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{
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EMACS_TAG_BLOCK *block;
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block = (EMACS_TAG_BLOCK *)xmalloc (sizeof (EMACS_TAG_BLOCK));
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block->filename = xstrdup (filename);
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block->entrylen = 0;
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block->entries = (EMACS_TAG **)NULL;
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block->entries_index = 0;
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block->entries_slots = 0;
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return (block);
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}
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static void
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add_tag_to_block (block, name, line, char_offset)
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EMACS_TAG_BLOCK *block;
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char *name;
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int line;
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long char_offset;
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{
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EMACS_TAG *tag;
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tag = (EMACS_TAG *)xmalloc (sizeof (EMACS_TAG));
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tag->name = name;
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tag->line = line;
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tag->char_offset = char_offset;
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add_pointer_to_array (tag, block->entries_index, block->entries,
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block->entries_slots, 50, EMACS_TAG *);
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}
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/* Read the file represented by FILENAME into core, and search it for Info
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function declarations. Output the declarations in various forms to the
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DOC_STREAM and FUNS_STREAM. */
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static void
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process_one_file (filename, doc_stream, funs_stream)
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char *filename;
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FILE *doc_stream, *funs_stream;
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{
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int descriptor, decl_len;
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char *buffer, *decl_str;
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struct stat finfo;
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long offset;
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long file_size;
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EMACS_TAG_BLOCK *block;
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if (stat (filename, &finfo) == -1)
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fatal_file_error (filename);
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descriptor = open (filename, O_RDONLY, 0666);
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if (descriptor == -1)
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fatal_file_error (filename);
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file_size = (long) finfo.st_size;
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buffer = (char *)xmalloc (1 + file_size);
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read (descriptor, buffer, file_size);
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close (descriptor);
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offset = 0;
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decl_str = DECLARATION_STRING;
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decl_len = strlen (decl_str);
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block = make_emacs_tag_block (filename);
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while (1)
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{
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long point = 0;
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long line_start = 0;
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int line_number = 0;
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char *func, *doc;
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#if defined (NAMED_FUNCTIONS)
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char *func_name;
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#endif /* NAMED_FUNCTIONS */
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for (; offset < (file_size - decl_len); offset++)
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{
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if (buffer[offset] == '\n')
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{
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line_number++;
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line_start = offset + 1;
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}
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if (strncmp (buffer + offset, decl_str, decl_len) == 0)
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{
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offset += decl_len;
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point = offset;
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break;
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}
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}
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if (!point)
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break;
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/* Skip forward until we find the open paren. */
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while (point < file_size)
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{
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if (buffer[point] == '\n')
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{
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line_number++;
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line_start = point + 1;
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}
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else if (buffer[point] == '(')
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break;
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point++;
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}
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while (point++ < file_size)
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{
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if (!whitespace_or_newline (buffer[point]))
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break;
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else if (buffer[point] == '\n')
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{
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line_number++;
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line_start = point + 1;
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}
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}
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if (point >= file_size)
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break;
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/* Now looking at name of function. Get it. */
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for (offset = point; buffer[offset] != ','; offset++);
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func = (char *)xmalloc (1 + (offset - point));
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strncpy (func, buffer + point, offset - point);
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func[offset - point] = '\0';
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/* Remember this tag in the current block. */
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{
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char *tag_name;
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tag_name = (char *)xmalloc (1 + (offset - line_start));
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strncpy (tag_name, buffer + line_start, offset - line_start);
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tag_name[offset - line_start] = '\0';
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add_tag_to_block (block, tag_name, line_number, point);
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}
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#if defined (NAMED_FUNCTIONS)
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/* Generate the user-visible function name from the function's name. */
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{
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register int i;
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char *name_start;
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name_start = func;
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if (strncmp (name_start, "info_", 5) == 0)
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name_start += 5;
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func_name = xstrdup (name_start);
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/* Fix up "ea" commands. */
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if (strncmp (func_name, "ea_", 3) == 0)
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{
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char *temp_func_name;
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temp_func_name = (char *)xmalloc (10 + strlen (func_name));
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strcpy (temp_func_name, "echo_area_");
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strcat (temp_func_name, func_name + 3);
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free (func_name);
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func_name = temp_func_name;
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}
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for (i = 0; func_name[i]; i++)
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if (func_name[i] == '_')
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func_name[i] = '-';
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}
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#endif /* NAMED_FUNCTIONS */
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/* Find doc string. */
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point = offset + 1;
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while (point < file_size)
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{
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if (buffer[point] == '\n')
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{
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line_number++;
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line_start = point + 1;
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}
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if (buffer[point] == '"')
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break;
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else
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point++;
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}
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offset = point + 1;
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while (offset < file_size)
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{
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if (buffer[offset] == '\n')
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{
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line_number++;
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line_start = offset + 1;
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}
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if (buffer[offset] == '\\')
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offset += 2;
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else if (buffer[offset] == '"')
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break;
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else
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offset++;
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}
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offset++;
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if (offset >= file_size)
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break;
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doc = (char *)xmalloc (1 + (offset - point));
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strncpy (doc, buffer + point, offset - point);
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doc[offset - point] = '\0';
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#if defined (NAMED_FUNCTIONS)
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fprintf (doc_stream, " { %s, \"%s\", %s },\n", func, func_name, doc);
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free (func_name);
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#else /* !NAMED_FUNCTIONS */
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fprintf (doc_stream, " { %s, %s },\n", func, doc);
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#endif /* !NAMED_FUNCTIONS */
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fprintf (funs_stream, "extern void %s ();\n", func);
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free (func);
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free (doc);
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}
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free (buffer);
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/* If we created any tags, remember this file on our global list. Otherwise,
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free the memory already allocated to it. */
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if (block->entries)
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add_pointer_to_array (block, emacs_tags_index, emacs_tags,
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emacs_tags_slots, 10, EMACS_TAG_BLOCK *);
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else
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{
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free (block->filename);
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free (block);
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}
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}
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static void
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fatal_file_error (filename)
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char *filename;
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{
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fprintf (stderr, _("Couldn't manipulate the file %s.\n"), filename);
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exit (2);
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}
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static FILE *
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must_fopen (filename, mode)
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char *filename, *mode;
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{
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FILE *stream;
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stream = fopen (filename, mode);
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if (!stream)
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fatal_file_error (filename);
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return (stream);
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}
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