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makedoc.c
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/**
* @file
* Read nroff-like comments in the code and convert them into documentation
*
* @authors
* Copyright (C) 1999-2000 Thomas Roessler <[email protected]>
*
* @copyright
* 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 of the License, 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, see <http://www.gnu.org/licenses/>.
*/
/*
* This program parses neomutt's init.h and generates documentation in
* three different formats:
*
* -> a commented neomuttrc configuration file
* -> nroff, suitable for inclusion in a manual page
* -> docbook-xml, suitable for inclusion in the
* SGML-based manual
*/
#include "config.h"
#include <ctype.h>
#include <errno.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "makedoc_defs.h"
// clang-format off
#define D_NL (1 << 0)
#define D_EM (1 << 1)
#define D_BF (1 << 2)
#define D_TAB (1 << 3)
#define D_NP (1 << 4)
#define D_INIT (1 << 5)
#define D_DL (1 << 6)
#define D_DT (1 << 7)
#define D_DD (1 << 8)
#define D_PA (1 << 9)
#define D_IL (1 << 10)
#define D_TT (1 << 11)
// clang-format on
/**
* enum OutputFormats - Documentation output formats
*/
enum OutputFormats
{
F_CONF,
F_MAN,
F_SGML,
F_NONE
};
/**
* enum SpecialChars - All specially-treated characters
*/
enum SpecialChars
{
SP_START_EM,
SP_START_BF,
SP_START_TT,
SP_END_FT,
SP_NEWLINE,
SP_NEWPAR,
SP_END_PAR,
SP_STR,
SP_START_TAB,
SP_END_TAB,
SP_START_DL,
SP_DT,
SP_DD,
SP_END_DD,
SP_END_DL,
SP_START_IL,
SP_END_IL,
SP_END_SECT,
SP_REFER
};
struct VariableTypes
{
char *machine;
char *human;
};
/**
* enum DataType - User-variable types
*/
enum DataType
{
DT_NONE = 0,
DT_ADDRESS,
DT_BOOL,
DT_COMMAND,
DT_ENUM,
DT_LONG,
DT_MAILBOX,
DT_MBTABLE,
DT_NUMBER,
DT_PATH,
DT_QUAD,
DT_REGEX,
DT_SLIST,
DT_SORT,
DT_STRING,
DT_SYNONYM,
};
char *Progname = NULL;
short Debug = 0;
int fd_recurse = 0;
#define BUFSIZE 2048
struct VariableTypes types[] = {
// clang-format off
{ "DT_NONE", "-none-" },
{ "DT_ADDRESS", "e-mail address" },
{ "DT_BOOL", "boolean" },
{ "DT_COMMAND", "command" },
{ "DT_ENUM", "enumeration" },
{ "DT_LONG", "number (long)" },
{ "DT_MAILBOX", "mailbox" },
{ "DT_MBTABLE", "character string" },
{ "DT_NUMBER", "number" },
{ "DT_PATH", "path" },
{ "DT_QUAD", "quadoption" },
{ "DT_REGEX", "regular expression" },
{ "DT_SLIST", "string list" },
{ "DT_SORT", "sort order" },
{ "DT_STRING", "string" },
{ "DT_SYNONYM", NULL },
{ NULL, NULL },
// clang-format on
};
/* skip whitespace */
static char *skip_ws(char *s)
{
while (*s && isspace((unsigned char) *s))
s++;
return s;
}
/* isolate a token */
static char *get_token(char *d, size_t l, char *s)
{
static char single_char_tokens[] = "[]{},;|";
char *t = NULL;
bool is_quoted = false;
char *dd = d;
if (Debug)
fprintf(stderr, "%s: get_token called for `%s'.\n", Progname, s);
s = skip_ws(s);
if (Debug > 1)
fprintf(stderr, "%s: argument after skip_ws(): `%s'.\n", Progname, s);
if (!*s)
{
if (Debug)
fprintf(stderr, "%s: no more tokens on this line.\n", Progname);
return NULL;
}
if (strchr(single_char_tokens, *s))
{
if (Debug)
fprintf(stderr, "%s: found single character token `%c'.\n", Progname, *s);
d[0] = *s++;
d[1] = '\0';
return s;
}
if (*s == '"')
{
if (Debug)
fprintf(stderr, "%s: found quote character.\n", Progname);
s++;
is_quoted = true;
}
for (t = s; *t && --l > 0; t++)
{
if (*t == '\\' && !t[1])
break;
if (is_quoted && *t == '\\')
{
switch ((*d = *++t))
{
case 'n':
*d = '\n';
break;
case 't':
*d = '\t';
break;
case 'r':
*d = '\r';
break;
case 'a':
*d = '\a';
break;
}
d++;
continue;
}
if (is_quoted && *t == '"')
{
t++;
break;
}
else if (!is_quoted && strchr(single_char_tokens, *t))
break;
else if (!is_quoted && isspace((unsigned char) *t))
break;
else
*d++ = *t;
}
*d = '\0';
if (Debug)
{
fprintf(stderr, "%s: Got %stoken: `%s'.\n", Progname, is_quoted ? "quoted " : "", dd);
fprintf(stderr, "%s: Remainder: `%s'.\n", Progname, t);
}
return t;
}
static int sgml_fputc(int c, FILE *fp_out)
{
switch (c)
{
/* the bare minimum for escaping */
case '<':
return fputs("<", fp_out);
case '>':
return fputs(">", fp_out);
case '&':
return fputs("&", fp_out);
default:
return fputc(c, fp_out);
}
}
static int sgml_fputs(const char *s, FILE *fp_out)
{
for (; *s; s++)
if (sgml_fputc((unsigned int) *s, fp_out) == EOF)
return EOF;
return 0;
}
/* print something. */
static int print_it(enum OutputFormats format, int special, char *str, FILE *fp_out, int docstat)
{
int onl = docstat & (D_NL | D_NP);
docstat &= ~(D_NL | D_NP | D_INIT);
switch (format)
{
/* configuration file */
case F_CONF:
{
switch (special)
{
static int Continuation = 0;
case SP_END_FT:
docstat &= ~(D_EM | D_BF | D_TT);
break;
case SP_START_BF:
docstat |= D_BF;
break;
case SP_START_EM:
docstat |= D_EM;
break;
case SP_START_TT:
docstat |= D_TT;
break;
case SP_NEWLINE:
{
if (onl)
docstat |= onl;
else
{
fputs("\n# ", fp_out);
docstat |= D_NL;
}
if (docstat & D_DL)
Continuation++;
break;
}
case SP_NEWPAR:
{
if (onl & D_NP)
{
docstat |= onl;
break;
}
if (!(onl & D_NL))
fputs("\n# ", fp_out);
fputs("\n# ", fp_out);
docstat |= D_NP;
break;
}
case SP_START_TAB:
{
if (!onl)
fputs("\n# ", fp_out);
docstat |= D_TAB;
break;
}
case SP_END_TAB:
{
docstat &= ~D_TAB;
docstat |= D_NL;
break;
}
case SP_START_DL:
{
docstat |= D_DL;
break;
}
case SP_DT:
{
Continuation = 0;
docstat |= D_DT;
break;
}
case SP_DD:
{
if (docstat & D_IL)
fputs("- ", fp_out);
Continuation = 0;
break;
}
case SP_END_DL:
{
Continuation = 0;
docstat &= ~D_DL;
break;
}
case SP_START_IL:
{
docstat |= D_IL;
break;
}
case SP_END_IL:
{
Continuation = 0;
docstat &= ~D_IL;
break;
}
case SP_STR:
{
if (Continuation)
{
Continuation = 0;
fputs(" ", fp_out);
}
fputs(str, fp_out);
if (docstat & D_DT)
{
for (int i = strlen(str); i < 8; i++)
putc(' ', fp_out);
docstat &= ~D_DT;
docstat |= D_NL;
}
break;
}
}
break;
}
/* manual page */
case F_MAN:
{
switch (special)
{
case SP_END_FT:
{
fputs("\\fP", fp_out);
docstat &= ~(D_EM | D_BF | D_TT);
break;
}
case SP_START_BF:
{
fputs("\\fB", fp_out);
docstat |= D_BF;
docstat &= ~(D_EM | D_TT);
break;
}
case SP_START_EM:
{
fputs("\\fI", fp_out);
docstat |= D_EM;
docstat &= ~(D_BF | D_TT);
break;
}
case SP_START_TT:
{
fputs("\\fC", fp_out);
docstat |= D_TT;
docstat &= ~(D_BF | D_EM);
break;
}
case SP_NEWLINE:
{
if (onl)
docstat |= onl;
else
{
fputc('\n', fp_out);
docstat |= D_NL;
}
break;
}
case SP_NEWPAR:
{
if (onl & D_NP)
{
docstat |= onl;
break;
}
if (!(onl & D_NL))
fputc('\n', fp_out);
fputs(".IP\n", fp_out);
docstat |= D_NP;
break;
}
case SP_START_TAB:
{
fputs("\n.IP\n.EX\n", fp_out);
docstat |= D_TAB | D_NL;
break;
}
case SP_END_TAB:
{
fputs("\n.EE\n", fp_out);
docstat &= ~D_TAB;
docstat |= D_NL;
break;
}
case SP_START_DL:
{
fputs(".RS\n.PD 0\n", fp_out);
docstat |= D_DL;
break;
}
case SP_DT:
{
fputs(".TP\n", fp_out);
break;
}
case SP_DD:
{
if (docstat & D_IL)
fputs(".TP\n\\(hy ", fp_out);
else
fputs("\n", fp_out);
break;
}
case SP_END_DL:
{
fputs(".RE\n.PD 1", fp_out);
docstat &= ~D_DL;
break;
}
case SP_START_IL:
{
fputs(".RS\n.PD 0\n", fp_out);
docstat |= D_IL;
break;
}
case SP_END_IL:
{
fputs(".RE\n.PD 1", fp_out);
docstat &= ~D_DL;
break;
}
case SP_STR:
{
while (*str)
{
for (; *str; str++)
{
if (*str == '"')
fputs("\"", fp_out);
else if (*str == '\\')
fputs("\\\\", fp_out);
else if (*str == '-')
fputs("\\-", fp_out);
else if (strncmp(str, "``", 2) == 0)
{
fputs("\\(lq", fp_out);
str++;
}
else if (strncmp(str, "''", 2) == 0)
{
fputs("\\(rq", fp_out);
str++;
}
else
fputc(*str, fp_out);
}
}
break;
}
}
break;
}
/* SGML based manual */
case F_SGML:
{
switch (special)
{
case SP_END_FT:
{
if (docstat & D_EM)
fputs("</emphasis>", fp_out);
if (docstat & D_BF)
fputs("</emphasis>", fp_out);
if (docstat & D_TT)
fputs("</literal>", fp_out);
docstat &= ~(D_EM | D_BF | D_TT);
break;
}
case SP_START_BF:
{
fputs("<emphasis role=\"bold\">", fp_out);
docstat |= D_BF;
docstat &= ~(D_EM | D_TT);
break;
}
case SP_START_EM:
{
fputs("<emphasis>", fp_out);
docstat |= D_EM;
docstat &= ~(D_BF | D_TT);
break;
}
case SP_START_TT:
{
fputs("<literal>", fp_out);
docstat |= D_TT;
docstat &= ~(D_BF | D_EM);
break;
}
case SP_NEWLINE:
{
if (onl)
docstat |= onl;
else
{
fputc('\n', fp_out);
docstat |= D_NL;
}
break;
}
case SP_NEWPAR:
{
if (onl & D_NP)
{
docstat |= onl;
break;
}
if (!(onl & D_NL))
fputc('\n', fp_out);
if (docstat & D_PA)
fputs("</para>\n", fp_out);
fputs("<para>\n", fp_out);
docstat |= D_NP;
docstat |= D_PA;
break;
}
case SP_END_PAR:
{
fputs("</para>\n", fp_out);
docstat &= ~D_PA;
break;
}
case SP_START_TAB:
{
if (docstat & D_PA)
{
fputs("\n</para>\n", fp_out);
docstat &= ~D_PA;
}
fputs("\n<screen>\n", fp_out);
docstat |= D_TAB | D_NL;
break;
}
case SP_END_TAB:
{
fputs("</screen>", fp_out);
docstat &= ~D_TAB;
docstat |= D_NL;
break;
}
case SP_START_DL:
{
if (docstat & D_PA)
{
fputs("\n</para>\n", fp_out);
docstat &= ~D_PA;
}
fputs("\n<informaltable>\n<tgroup cols=\"2\">\n<tbody>\n", fp_out);
docstat |= D_DL;
break;
}
case SP_DT:
{
fputs("<row><entry>", fp_out);
break;
}
case SP_DD:
{
docstat |= D_DD;
if (docstat & D_DL)
fputs("</entry><entry>", fp_out);
else
fputs("<listitem><para>", fp_out);
break;
}
case SP_END_DD:
{
if (docstat & D_DL)
fputs("</entry></row>\n", fp_out);
else
fputs("</para></listitem>", fp_out);
docstat &= ~D_DD;
break;
}
case SP_END_DL:
{
fputs("</entry></row></tbody></tgroup></informaltable>\n", fp_out);
docstat &= ~(D_DD | D_DL);
break;
}
case SP_START_IL:
{
if (docstat & D_PA)
{
fputs("\n</para>\n", fp_out);
docstat &= ~D_PA;
}
fputs("\n<itemizedlist>\n", fp_out);
docstat |= D_IL;
break;
}
case SP_END_IL:
{
fputs("</para></listitem></itemizedlist>\n", fp_out);
docstat &= ~(D_DD | D_DL);
break;
}
case SP_END_SECT:
{
fputs("</sect2>", fp_out);
break;
}
case SP_STR:
{
if (docstat & D_TAB)
sgml_fputs(str, fp_out);
else
{
while (*str)
{
for (; *str; str++)
{
if (strncmp(str, "``", 2) == 0)
{
fputs("<quote>", fp_out);
str++;
}
else if (strncmp(str, "''", 2) == 0)
{
fputs("</quote>", fp_out);
str++;
}
else
sgml_fputc(*str, fp_out);
}
}
}
break;
}
}
break;
}
default:
break;
}
return docstat;
}
/* close eventually-open environments. */
static int flush_doc(enum OutputFormats format, int docstat, FILE *fp_out)
{
if (docstat & D_INIT)
return D_INIT;
if (fd_recurse++)
{
fprintf(stderr, "%s: Internal error, recursion in flush_doc()!\n", Progname);
exit(1);
}
if (docstat & (D_PA))
docstat = print_it(format, SP_END_PAR, NULL, fp_out, docstat);
if (docstat & (D_TAB))
docstat = print_it(format, SP_END_TAB, NULL, fp_out, docstat);
if (docstat & (D_DL))
docstat = print_it(format, SP_END_DL, NULL, fp_out, docstat);
if (docstat & (D_EM | D_BF | D_TT))
docstat = print_it(format, SP_END_FT, NULL, fp_out, docstat);
print_it(format, SP_END_SECT, NULL, fp_out, docstat);
print_it(format, SP_NEWLINE, NULL, fp_out, 0);
fd_recurse--;
return D_INIT;
}
static int commit_buf(enum OutputFormats format, char *buf, char **d, FILE *fp_out, int docstat)
{
if (*d > buf)
{
**d = '\0';
docstat = print_it(format, SP_STR, buf, fp_out, docstat);
*d = buf;
}
return docstat;
}
/*
* Documentation line parser
*
* The following code parses specially formatted documentation
* comments in init.h.
*
* The format is very remotely inspired by nroff. Most important, it's
* easy to parse and convert, and it was easy to generate from the SGML
* source of neomutt's original manual.
*
* - \fI switches to italics
* - \fB switches to boldface
* - \fP switches to normal display
* - .dl on a line starts a definition list (name taken taken from HTML).
* - .dt starts a term in a definition list.
* - .dd starts a definition in a definition list.
* - .de on a line finishes a definition list.
* - .il on a line starts an itemized list
* - .dd starts an item in an itemized list
* - .ie on a line finishes an itemized list
* - .ts on a line starts a "tscreen" environment (name taken from SGML).
* - .te on a line finishes this environment.
* - .pp on a line starts a paragraph.
* - \$word will be converted to a reference to word, where appropriate.
* Note that \$$word is possible as well.
* - '. ' in the beginning of a line expands to two space characters.
* This is used to protect indentations in tables.
*/
/**
* sgml_id_fputs - reduce CDATA to ID
*/
static int sgml_id_fputs(const char *s, FILE *fp_out)
{
char id;
if (*s == '<')
s++;
for (; *s; s++)
{
if (*s == '_')
id = '-';
else
id = *s;
if (*s == '>' && !*(s + 1))
break;
if (fputc((unsigned int) id, fp_out) == EOF)
return EOF;
}
return 0;
}
static void print_ref(enum OutputFormats format, FILE *fp_out,
bool output_dollar, const char *ref)
{
switch (format)
{
case F_CONF:
case F_MAN:
if (output_dollar)
putc('$', fp_out);
fputs(ref, fp_out);
break;
case F_SGML:
fputs("<link linkend=\"", fp_out);
sgml_id_fputs(ref, fp_out);
fputs("\">", fp_out);
if (output_dollar)
fputc('$', fp_out);
sgml_fputs(ref, fp_out);
fputs("</link>", fp_out);
break;
default:
break;
}
}
static int handle_docline(enum OutputFormats format, char *l, FILE *fp_out, int docstat)
{
char buf[BUFSIZE];
char *s = NULL, *d = NULL;
l = skip_ws(l);
if (Debug)
fprintf(stderr, "%s: handle_docline `%s'\n", Progname, l);
if (strncmp(l, ".pp", 3) == 0)
return print_it(format, SP_NEWPAR, NULL, fp_out, docstat);
if (strncmp(l, ".ts", 3) == 0)
return print_it(format, SP_START_TAB, NULL, fp_out, docstat);
if (strncmp(l, ".te", 3) == 0)
return print_it(format, SP_END_TAB, NULL, fp_out, docstat);
if (strncmp(l, ".dl", 3) == 0)
return print_it(format, SP_START_DL, NULL, fp_out, docstat);
if (strncmp(l, ".de", 3) == 0)
return print_it(format, SP_END_DL, NULL, fp_out, docstat);
if (strncmp(l, ".il", 3) == 0)
return print_it(format, SP_START_IL, NULL, fp_out, docstat);
if (strncmp(l, ".ie", 3) == 0)
return print_it(format, SP_END_IL, NULL, fp_out, docstat);
if (strncmp(l, ". ", 2) == 0)
*l = ' ';
for (s = l, d = buf; *s; s++)
{
if (strncmp(s, "\\(as", 4) == 0)
{
*d++ = '*';
s += 3;
}
else if (strncmp(s, "\\(rs", 4) == 0)
{
*d++ = '\\';
s += 3;
}
else if (strncmp(s, "\\fI", 3) == 0)
{
docstat = commit_buf(format, buf, &d, fp_out, docstat);
docstat = print_it(format, SP_START_EM, NULL, fp_out, docstat);
s += 2;
}
else if (strncmp(s, "\\fB", 3) == 0)
{
docstat = commit_buf(format, buf, &d, fp_out, docstat);
docstat = print_it(format, SP_START_BF, NULL, fp_out, docstat);
s += 2;
}
else if (strncmp(s, "\\fC", 3) == 0)
{
docstat = commit_buf(format, buf, &d, fp_out, docstat);
docstat = print_it(format, SP_START_TT, NULL, fp_out, docstat);
s += 2;
}
else if (strncmp(s, "\\fP", 3) == 0)
{
docstat = commit_buf(format, buf, &d, fp_out, docstat);
docstat = print_it(format, SP_END_FT, NULL, fp_out, docstat);
s += 2;
}
else if (strncmp(s, ".dt", 3) == 0)
{
if (docstat & D_DD)
{
docstat = commit_buf(format, buf, &d, fp_out, docstat);
docstat = print_it(format, SP_END_DD, NULL, fp_out, docstat);
}
docstat = commit_buf(format, buf, &d, fp_out, docstat);
docstat = print_it(format, SP_DT, NULL, fp_out, docstat);
s += 3;
}
else if (strncmp(s, ".dd", 3) == 0)
{
if ((docstat & D_IL) && (docstat & D_DD))
{
docstat = commit_buf(format, buf, &d, fp_out, docstat);
docstat = print_it(format, SP_END_DD, NULL, fp_out, docstat);
}
docstat = commit_buf(format, buf, &d, fp_out, docstat);
docstat = print_it(format, SP_DD, NULL, fp_out, docstat);
s += 3;
}
else if (*s == '$')
{
bool output_dollar = false;
char *ref = NULL;
s++;
if (*s == '$')
{
output_dollar = true;
s++;
}
if (*s == '$')
{
*d++ = '$';
}
else
{
ref = s;
while (isalnum((unsigned char) *s) || (*s && strchr("-_<>", *s)))
s++;
docstat = commit_buf(format, buf, &d, fp_out, docstat);
const char save = *s;
*s = '\0';
print_ref(format, fp_out, output_dollar, ref);
*s = save;
s--;
}
}
else
*d++ = *s;
}
docstat = commit_buf(format, buf, &d, fp_out, docstat);
return print_it(format, SP_NEWLINE, NULL, fp_out, docstat);
}
static int buf_to_type(const char *s)
{
for (int type = DT_NONE; types[type].machine; type++)
if (strcmp(types[type].machine, s) == 0)
return type;
return DT_NONE;
}
static void pretty_default(char *t, size_t l, const char *s, int type)
{
memset(t, 0, l);
l--;
switch (type)
{
case DT_QUAD:
{