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Diffstat (limited to 'texinfo/info/makedoc.c')
| -rw-r--r-- | texinfo/info/makedoc.c | 481 |
1 files changed, 481 insertions, 0 deletions
diff --git a/texinfo/info/makedoc.c b/texinfo/info/makedoc.c new file mode 100644 index 0000000..c0c4587 --- /dev/null +++ b/texinfo/info/makedoc.c @@ -0,0 +1,481 @@ +/* makedoc.c -- Make DOC.C and FUNS.H from input files. */ + +/* This file is part of GNU Info, a program for reading online documentation + stored in Info format. + + Copyright (C) 1993 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + Written by Brian Fox (bfox@ai.mit.edu). */ + +/* This program grovels the contents of the source files passed as arguments + and writes out a file of function pointers and documentation strings, and + a header file which describes the contents. This only does the functions + declared with DECLARE_INFO_COMMAND. */ + +#include <stdio.h> +#include <ctype.h> +#include <sys/types.h> +#if defined (HAVE_SYS_FILE_H) +#include <sys/file.h> +#endif /* HAVE_SYS_FILE_H */ +#include <sys/stat.h> +#include "general.h" + +#if !defined (O_RDONLY) +#if defined (HAVE_SYS_FCNTL_H) +#include <sys/fcntl.h> +#else /* !HAVE_SYS_FCNTL_H */ +#include <fcntl.h> +#endif /* !HAVE_SYS_FCNTL_H */ +#endif /* !O_RDONLY */ + +extern void *xmalloc (), *xrealloc (); +static void fatal_file_error (); + +/* Name of the header file which receives the declarations of functions. */ +static char *funs_filename = "funs.h"; + +/* Name of the documentation to function pointer file. */ +static char *doc_filename = "doc.c"; + +static char *doc_header[] = { + "/* doc.c -- Generated structure containing function names and doc strings.", + "", + " This file was automatically made from various source files with the", + " command \"%s\". DO NOT EDIT THIS FILE, only \"%s.c\".", + (char *)NULL +}; + +static char *doc_header_1[] = { + " An entry in the array FUNCTION_DOC_ARRAY is made for each command", + " found in the above files; each entry consists of a function pointer,", +#if defined (NAMED_FUNCTIONS) + " a string which is the user-visible name of the function,", +#endif /* NAMED_FUNCTIONS */ + " and a string which documents its purpose. */", + "", + "#include \"doc.h\"", + "#include \"funs.h\"", + "", + "FUNCTION_DOC function_doc_array[] = {", + "", + (char *)NULL +}; + +/* How to remember the locations of the functions found so that Emacs + can use the information in a tag table. */ +typedef struct { + char *name; /* Name of the tag. */ + int line; /* Line number at which it appears. */ + long char_offset; /* Character offset at which it appears. */ +} EMACS_TAG; + +typedef struct { + char *filename; /* Name of the file containing entries. */ + long entrylen; /* Total number of characters in tag block. */ + EMACS_TAG **entries; /* Entries found in FILENAME. */ + int entries_index; + int entries_slots; +} EMACS_TAG_BLOCK; + +EMACS_TAG_BLOCK **emacs_tags = (EMACS_TAG_BLOCK **)NULL; +int emacs_tags_index = 0; +int emacs_tags_slots = 0; + +#define DECLARATION_STRING "\nDECLARE_INFO_COMMAND" + +static void process_one_file (); +static void maybe_dump_tags (); +static FILE *must_fopen (); + +int +main (argc, argv) + int argc; + char **argv; +{ + register int i; + int tags_only = 0; + FILE *funs_stream, *doc_stream; + + for (i = 1; i < argc; i++) + if (strcmp (argv[i], "-tags") == 0) + { + tags_only++; + break; + } + + if (tags_only) + { + funs_filename = "/dev/null"; + doc_filename = "/dev/null"; + } + + funs_stream = must_fopen (funs_filename, "w"); + doc_stream = must_fopen (doc_filename, "w"); + + fprintf (funs_stream, + "/* %s -- Generated declarations for Info commands. */\n", + funs_filename); + + for (i = 0; doc_header[i]; i++) + { + fprintf (doc_stream, doc_header[i], argv[0], argv[0]); + fprintf (doc_stream, "\n"); + } + + fprintf (doc_stream, + " Source files groveled to make this file include:\n\n"); + + for (i = 1; i < argc; i++) + fprintf (doc_stream, "\t%s\n", argv[i]); + + fprintf (doc_stream, "\n"); + + for (i = 0; doc_header_1[i]; i++) + fprintf (doc_stream, "%s\n", doc_header_1[i]); + + + for (i = 1; i < argc; i++) + { + char *curfile; + curfile = argv[i]; + + if (*curfile == '-') + continue; + + fprintf (doc_stream, "/* Commands found in \"%s\". */\n", curfile); + fprintf (funs_stream, "\n/* Functions declared in \"%s\". */\n", + curfile); + + process_one_file (curfile, doc_stream, funs_stream); + } + + fprintf (doc_stream, + " { (VFunction *)NULL, (char *)NULL, (char *)NULL }\n};\n"); + + fclose (funs_stream); + fclose (doc_stream); + + if (tags_only) + maybe_dump_tags (stdout); + exit (0); +} + +/* Dumping out the contents of an Emacs tags table. */ +static void +maybe_dump_tags (stream) + FILE *stream; +{ + register int i; + + /* Print out the information for each block. */ + for (i = 0; i < emacs_tags_index; i++) + { + register int j; + register EMACS_TAG_BLOCK *block; + register EMACS_TAG *etag; + long block_len; + + block_len = 0; + block = emacs_tags[i]; + + /* Calculate the length of the dumped block first. */ + for (j = 0; j < block->entries_index; j++) + { + char digits[30]; + etag = block->entries[j]; + block_len += 3 + strlen (etag->name); + sprintf (digits, "%d,%d", etag->line, etag->char_offset); + block_len += strlen (digits); + } + + /* Print out the defining line. */ + fprintf (stream, "\f\n%s,%d\n", block->filename, block_len); + + /* Print out the individual tags. */ + for (j = 0; j < block->entries_index; j++) + { + etag = block->entries[j]; + + fprintf (stream, "%s,\177%d,%d\n", + etag->name, etag->line, etag->char_offset); + } + } +} + +/* Keeping track of names, line numbers and character offsets of functions + found in source files. */ +static EMACS_TAG_BLOCK * +make_emacs_tag_block (filename) + char *filename; +{ + EMACS_TAG_BLOCK *block; + + block = (EMACS_TAG_BLOCK *)xmalloc (sizeof (EMACS_TAG_BLOCK)); + block->filename = strdup (filename); + block->entrylen = 0; + block->entries = (EMACS_TAG **)NULL; + block->entries_index = 0; + block->entries_slots = 0; + return (block); +} + +static void +add_tag_to_block (block, name, line, char_offset) + EMACS_TAG_BLOCK *block; + char *name; + int line; + long char_offset; +{ + EMACS_TAG *tag; + + tag = (EMACS_TAG *)xmalloc (sizeof (EMACS_TAG)); + tag->name = name; + tag->line = line; + tag->char_offset = char_offset; + add_pointer_to_array (tag, block->entries_index, block->entries, + block->entries_slots, 50, EMACS_TAG *); +} + +/* Read the file represented by FILENAME into core, and search it for Info + function declarations. Output the declarations in various forms to the + DOC_STREAM and FUNS_STREAM. */ +static void +process_one_file (filename, doc_stream, funs_stream) + char *filename; + FILE *doc_stream, *funs_stream; +{ + int descriptor, decl_len; + char *buffer, *decl_str; + struct stat finfo; + long offset; + long file_size; + EMACS_TAG_BLOCK *block; + + if (stat (filename, &finfo) == -1) + fatal_file_error (filename); + + descriptor = open (filename, O_RDONLY, 0666); + + if (descriptor == -1) + fatal_file_error (filename); + + file_size = (long) finfo.st_size; + buffer = (char *)xmalloc (1 + file_size); + read (descriptor, buffer, file_size); + close (descriptor); + + offset = 0; + decl_str = DECLARATION_STRING; + decl_len = strlen (decl_str); + + block = make_emacs_tag_block (filename); + + while (1) + { + long point = 0; + long line_start = 0; + int line_number = 0; + + char *func, *doc; +#if defined (NAMED_FUNCTIONS) + char *func_name; +#endif /* NAMED_FUNCTIONS */ + + for (; offset < (file_size - decl_len); offset++) + { + if (buffer[offset] == '\n') + { + line_number++; + line_start = offset + 1; + } + + if (strncmp (buffer + offset, decl_str, decl_len) == 0) + { + offset += decl_len; + point = offset; + break; + } + } + + if (!point) + break; + + /* Skip forward until we find the open paren. */ + while (point < file_size) + { + if (buffer[point] == '\n') + { + line_number++; + line_start = point + 1; + } + else if (buffer[point] == '(') + break; + + point++; + } + + while (point++ < file_size) + { + if (!whitespace_or_newline (buffer[point])) + break; + else if (buffer[point] == '\n') + { + line_number++; + line_start = point + 1; + } + } + + if (point >= file_size) + break; + + /* Now looking at name of function. Get it. */ + for (offset = point; buffer[offset] != ','; offset++); + func = (char *)xmalloc (1 + (offset - point)); + strncpy (func, buffer + point, offset - point); + func[offset - point] = '\0'; + + /* Remember this tag in the current block. */ + { + char *tag_name; + + tag_name = (char *)xmalloc (1 + (offset - line_start)); + strncpy (tag_name, buffer + line_start, offset - line_start); + tag_name[offset - line_start] = '\0'; + add_tag_to_block (block, tag_name, line_number, point); + } + +#if defined (NAMED_FUNCTIONS) + /* Generate the user-visible function name from the function's name. */ + { + register int i; + char *name_start; + + name_start = func; + + if (strncmp (name_start, "info_", 5) == 0) + name_start += 5; + + func_name = strdup (name_start); + + /* Fix up "ea" commands. */ + if (strncmp (func_name, "ea_", 3) == 0) + { + char *temp_func_name; + + temp_func_name = (char *)xmalloc (10 + strlen (func_name)); + strcpy (temp_func_name, "echo_area_"); + strcat (temp_func_name, func_name + 3); + free (func_name); + func_name = temp_func_name; + } + + for (i = 0; func_name[i]; i++) + if (func_name[i] == '_') + func_name[i] = '-'; + } +#endif /* NAMED_FUNCTIONS */ + + /* Find doc string. */ + point = offset + 1; + + while (point < file_size) + { + if (buffer[point] == '\n') + { + line_number++; + line_start = point + 1; + } + + if (buffer[point] == '"') + break; + else + point++; + } + + offset = point + 1; + + while (offset < file_size) + { + if (buffer[offset] == '\n') + { + line_number++; + line_start = offset + 1; + } + + if (buffer[offset] == '\\') + offset += 2; + else if (buffer[offset] == '"') + break; + else + offset++; + } + + offset++; + if (offset >= file_size) + break; + + doc = (char *)xmalloc (1 + (offset - point)); + strncpy (doc, buffer + point, offset - point); + doc[offset - point] = '\0'; + +#if defined (NAMED_FUNCTIONS) + fprintf (doc_stream, " { %s, \"%s\", %s },\n", func, func_name, doc); + free (func_name); +#else /* !NAMED_FUNCTIONS */ + fprintf (doc_stream, " { %s, %s },\n", func, doc); +#endif /* !NAMED_FUNCTIONS */ + + fprintf (funs_stream, "extern void %s ();\n", func); + free (func); + free (doc); + } + free (buffer); + + /* If we created any tags, remember this file on our global list. Otherwise, + free the memory already allocated to it. */ + if (block->entries) + add_pointer_to_array (block, emacs_tags_index, emacs_tags, + emacs_tags_slots, 10, EMACS_TAG_BLOCK *); + else + { + free (block->filename); + free (block); + } +} + +static void +fatal_file_error (filename) + char *filename; +{ + fprintf (stderr, "Couldn't manipulate the file %s.\n", filename); + exit (2); +} + +static FILE * +must_fopen (filename, mode) + char *filename, *mode; +{ + FILE *stream; + + stream = fopen (filename, mode); + if (!stream) + fatal_file_error (filename); + + return (stream); +} + |