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libc/winsup/doc/doctool.c

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/* doctool.c
Copyright 1998,1999,2000,2001 Red Hat, Inc.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <utime.h>
/* Building native in a cross-built directory is tricky. Be careful,
and beware that you don't have the full portability stuff available to
you (like libiberty) */
/*****************************************************************************/
/* The list of extensions that may contain SGML snippets. We check
both cases in case the file system isn't case sensitive enough. */
struct {
char *upper;
char *lower;
int is_sgml;
} extensions[] = {
{ ".C", ".c", 0 },
{ ".CC", ".cc", 0 },
{ ".H", ".h", 0 },
{ ".SGML", ".sgml", 1 },
{ 0, 0, 0 }
};
/*****************************************************************************/
void
show_help()
{
printf("Usage: doctool [-m] [-i] [-d dir] [-o outfile] [-s prefix] \\\n");
printf(" [-b book_id] infile\n");
printf(" -m means to adjust Makefile to include new dependencies\n");
printf(" -i means to include internal snippets\n");
printf(" -d means to recursively scan directory for snippets\n");
printf(" -o means to output to file (else stdout)\n");
printf(" -s means to suppress source dir prefix\n");
printf(" -b means to change the <book id=\"book_id\">\n");
printf("\n");
printf("doctool looks for DOCTOOL-START and DOCTOOL-END lines in source,\n");
printf("saves <foo id=\"bar\"> blocks, and looks for DOCTOOL-INSERT-bar\n");
printf("commands to insert selected sections. IDs starting with int-\n");
printf("are internal only, add- are added at the end of relevant sections\n");
printf("or add-int- for both. Inserted sections are chosen by prefix,\n");
printf("and sorted when inserted.\n");
exit(1);
}
/*****************************************************************************/
typedef struct Section {
struct Section *next;
struct OneFile *file;
char *name;
char internal;
char addend;
char used;
char **lines;
int num_lines;
int max_lines;
} Section;
typedef struct OneFile {
struct OneFile *next;
char *filename;
int enable_scan;
int used;
Section *sections;
} OneFile;
OneFile *file_list = 0;
char *output_name = 0;
FILE *output_file = 0;
char *source_dir_prefix = "";
char *book_id = 0;
int internal_flag = 0;
/*****************************************************************************/
char *
has_string(char *line, char *string)
{
int i;
while (*line)
{
for (i=0; line[i]; i++)
{
if (!string[i])
return line;
if (line[i] != string[i])
break;
}
line++;
}
return 0;
}
int
starts_with(char *line, char *string)
{
int i=0;
while (1)
{
if (!string[i])
return 1;
if (!line[i] || line[i] != string[i])
return 0;
i++;
}
}
/*****************************************************************************/
#ifdef S_ISLNK
#define STAT lstat
#else
#define STAT stat
#endif
void
scan_directory(dirname)
char *dirname;
{
struct stat st;
char *name;
struct dirent *de;
DIR *dir = opendir(dirname);
if (!dir)
return;
while (de = readdir(dir))
{
if (strcmp(de->d_name, ".") == 0
|| strcmp(de->d_name, "..") == 0)
continue;
name = (char *)malloc(strlen(dirname)+strlen(de->d_name)+3);
strcpy(name, dirname);
strcat(name, "/");
strcat(name, de->d_name);
STAT(name, &st);
if (S_ISDIR(st.st_mode))
{
scan_directory(name);
}
else if (S_ISREG(st.st_mode))
{
char *dot = strrchr(de->d_name, '.');
int i;
if (dot)
{
for (i=0; extensions[i].upper; i++)
if (strcmp(dot, extensions[i].upper) == 0
|| strcmp(dot, extensions[i].lower) == 0)
{
OneFile *one = (OneFile *)malloc(sizeof(OneFile));
one->next = file_list;
file_list = one;
one->filename = name;
one->enable_scan = ! extensions[i].is_sgml;
one->used = 0;
one->sections = 0;
}
}
}
}
closedir (dir);
}
/*****************************************************************************/
void
scan_file(OneFile *one)
{
FILE *f = fopen(one->filename, "r");
int enabled = ! one->enable_scan;
char line[1000], *tag=0, *id=0, *tmp;
int taglen = 0;
Section *section = 0;
Section **prev_section_ptr = &(one->sections);
if (!f)
{
perror(one->filename);
return;
}
while (fgets(line, 1000, f))
{
if (one->enable_scan)
{
/* source files have comment-embedded docs, check for them */
if (has_string(line, "DOCTOOL-START"))
enabled = 1;
if (has_string(line, "DOCTOOL-END"))
enabled = 0;
}
if (!enabled)
continue;
/* DOCTOOL-START
<sect1 id="dt-tags">
this is the doctool tags section.
</sect1>
DOCTOOL-END */
if (!tag && line[0] == '<')
{
tag = (char *)malloc(strlen(line)+1);
id = (char *)malloc(strlen(line)+1);
if (sscanf(line, "<%s id=\"%[^\"]\">", tag, id) == 2)
{
if (strcmp(tag, "book") == 0 || strcmp(tag, "BOOK") == 0)
{
/* Don't want to "scan" these */
return;
}
taglen = strlen(tag);
section = (Section *)malloc(sizeof(Section));
/* We want chunks within single files to appear in that order */
section->next = 0;
section->file = one;
*prev_section_ptr = section;
prev_section_ptr = &(section->next);
section->internal = 0;
section->addend = 0;
section->used = 0;
section->name = id;
if (starts_with(section->name, "add-"))
{
section->addend = 1;
section->name += 4;
}
if (starts_with(section->name, "int-"))
{
section->internal = 1;
section->name += 4;
}
section->lines = (char **)malloc(10*sizeof(char *));
section->num_lines = 0;
section->max_lines = 10;
}
else
{
free(tag);
free(id);
tag = id = 0;
}
}
if (tag && section)
{
if (section->num_lines >= section->max_lines)
{
section->max_lines += 10;
section->lines = (char **)realloc(section->lines,
section->max_lines * sizeof (char *));
}
section->lines[section->num_lines] = (char *)malloc(strlen(line)+1);
strcpy(section->lines[section->num_lines], line);
section->num_lines++;
if (line[0] == '<' && line[1] == '/'
&& memcmp(line+2, tag, taglen) == 0
&& (isspace(line[2+taglen]) || line[2+taglen] == '>'))
{
/* last line! */
tag = 0;
}
}
}
fclose(f);
}
/*****************************************************************************/
Section **
enumerate_matching_sections(char *name_prefix, int internal, int addend, int *count_ret)
{
Section **rv = (Section **)malloc(12*sizeof(Section *));
int count = 0, max=10, prefix_len = strlen(name_prefix);
OneFile *one;
int wildcard = 0;
if (name_prefix[strlen(name_prefix)-1] == '-')
wildcard = 1;
for (one=file_list; one; one=one->next)
{
Section *s;
for (s=one->sections; s; s=s->next)
{
int matches = 0;
if (wildcard)
{
if (starts_with(s->name, name_prefix))
matches = 1;
}
else
{
if (strcmp(s->name, name_prefix) == 0)
matches = 1;
}
if (s->internal <= internal
&& s->addend == addend
&& matches
&& ! s->used)
{
s->used = 1;
if (count >= max)
{
max += 10;
rv = (Section **)realloc(rv, max*sizeof(Section *));
}
rv[count++] = s;
rv[count] = 0;
}
}
}
if (count_ret)
*count_ret = count;
return rv;
}
/*****************************************************************************/
#define ID_CHARS "~@$%&()_-+[]{}:."
void include_section(char *name, int addend);
char *
unprefix(char *fn)
{
int l = strlen(source_dir_prefix);
if (memcmp(fn, source_dir_prefix, l) == 0)
{
fn += l;
while (*fn == '/' || *fn == '\\')
fn++;
return fn;
}
return fn;
}
void
parse_line(char *line, char *filename)
{
char *cmd = has_string(line, "DOCTOOL-INSERT-");
char *sname, *send, *id, *save;
if (!cmd)
{
if (book_id
&& (starts_with(line, "<book") || starts_with(line, "<BOOK")))
{
cmd = strchr(line, '>');
if (cmd)
{
cmd++;
fprintf(output_file, "<book id=\"%s\">", book_id);
fputs(cmd, output_file);
return;
}
}
fputs(line, output_file);
return;
}
if (cmd != line)
fwrite(line, cmd-line, 1, output_file);
save = (char *)malloc(strlen(line)+1);
strcpy(save, line);
line = save;
sname = cmd + 15; /* strlen("DOCTOOL-INSERT-") */
for (send = sname;
*send && isalnum(*send) || strchr(ID_CHARS, *send);
send++);
id = (char *)malloc(send-sname+2);
memcpy(id, sname, send-sname);
id[send-sname] = 0;
include_section(id, 0);
fprintf(output_file, "<!-- %s -->\n", unprefix(filename));
fputs(send, output_file);
free(save);
}
int
section_sort(const void *va, const void *vb)
{
Section *a = *(Section **)va;
Section *b = *(Section **)vb;
int rv = strcmp(a->name, b->name);
if (rv)
return rv;
return a->internal - b->internal;
}
void
include_section(char *name, int addend)
{
Section **sections, *s;
int count, i, l;
sections = enumerate_matching_sections(name, internal_flag, addend, &count);
qsort(sections, count, sizeof(sections[0]), section_sort);
for (i=0; i<count; i++)
{
s = sections[i];
s->file->used = 1;
fprintf(output_file, "<!-- %s -->\n", unprefix(s->file->filename));
for (l=addend; l<s->num_lines-1; l++)
parse_line(s->lines[l], s->file->filename);
if (!addend)
{
include_section(s->name, 1);
parse_line(s->lines[l], s->file->filename);
}
}
free(sections);
}
void
parse_sgml(FILE *in, char *input_name)
{
static char line[1000];
while (fgets(line, 1000, in))
{
parse_line(line, input_name);
}
}
/*****************************************************************************/
void
fix_makefile(char *output_name)
{
FILE *in, *out;
char line[1000];
int oname_len = strlen(output_name);
OneFile *one;
int used_something = 0;
struct stat st;
struct utimbuf times;
stat("Makefile", &st);
in = fopen("Makefile", "r");
if (!in)
{
perror("Makefile");
return;
}
out = fopen("Makefile.new", "w");
if (!out)
{
perror("Makefile.new");
return;
}
while (fgets(line, 1000, in))
{
if (starts_with(line, output_name)
&& strcmp(line+oname_len, ": \\\n") == 0)
{
/* this is the old dependency */
while (fgets(line, 1000, in))
{
if (strcmp(line+strlen(line)-2, "\\\n"))
break;
}
}
else
fputs(line, out);
}
fclose(in);
for (one=file_list; one; one=one->next)
if (one->used)
{
used_something = 1;
break;
}
if (used_something)
{
fprintf(out, "%s:", output_name);
for (one=file_list; one; one=one->next)
if (one->used)
fprintf(out, " \\\n\t%s", one->filename);
fprintf(out, "\n");
}
fclose(out);
times.actime = st.st_atime;
times.modtime = st.st_mtime;
utime("Makefile.new", &times);
if (rename("Makefile", "Makefile.old"))
return;
if (rename("Makefile.new", "Makefile"))
rename("Makefile.old", "Makefile");
}
/*****************************************************************************/
int
main(argc, argv)
int argc;
char **argv;
{
int i;
OneFile *one;
FILE *input_file;
int fix_makefile_flag = 0;
while (argc > 1 && argv[1][0] == '-')
{
if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0)
{
show_help();
}
else if (strcmp(argv[1], "-i") == 0)
{
internal_flag = 1;
}
else if (strcmp(argv[1], "-m") == 0)
{
fix_makefile_flag = 1;
}
else if (strcmp(argv[1], "-d") == 0 && argc > 2)
{
scan_directory(argv[2]);
argc--;
argv++;
}
else if (strcmp(argv[1], "-o") == 0 && argc > 2)
{
output_name = argv[2];
argc--;
argv++;
}
else if (strcmp(argv[1], "-s") == 0 && argc > 2)
{
source_dir_prefix = argv[2];
argc--;
argv++;
}
else if (strcmp(argv[1], "-b") == 0 && argc > 2)
{
book_id = argv[2];
argc--;
argv++;
}
argc--;
argv++;
}
for (one=file_list; one; one=one->next)
{
scan_file(one);
}
input_file = fopen(argv[1], "r");
if (!input_file)
{
perror(argv[1]);
return 1;
}
if (output_name)
{
output_file = fopen(output_name, "w");
if (!output_file)
{
perror(output_name);
return 1;
}
}
else
{
output_file = stdout;
output_name = "<stdout>";
}
parse_sgml(input_file, argv[1]);
if (output_file != stdout)
fclose(output_file);
if (fix_makefile_flag)
fix_makefile(output_name);
return 0;
}
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