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libisoburn/xorriso/make_xorriso_1.c

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/*
( cd xorriso ; cc -g -Wall -o make_xorriso_1 make_xorriso_1.c )
*/
/*
Specialized converter from xorriso/xorriso.texi to xorriso/xorriso.1,
or from xorriso/xorrisofs.texi to xorriso/xorrisofs.1,
or from xorriso/xorrecord.texi to xorriso/xorrecord.1.
or from xorriso/xorriso-tcltk.texi to xorriso/xorriso-tcltk.1.
or from xorriso/xorriso-dd-target.texi to xorriso/xorriso-dd-target.1.
of from test/merge_debian_iso.texi to test/merge_debian_iso.1
The conversion rules are described at the beginning of xorriso/xorriso.texi
Copyright 2010 - 2022 Thomas Schmitt, <scdbackup@gmx.net>
Provided under GPL version 2 or later.
*/
#ifdef HAVE_CONFIG_H
#include "../config.h"
#endif
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
/* The conversion state
*/
struct Mx1 {
char prog[4096];
int count_in;
int count_out;
int skipping; /* <0 stacked skipping , 0= no , >0 counting down */
};
int Mx1_substitute(struct Mx1 *m, char line_in[256], char line_out[256],
int raw, int upto, int flag);
int Mx1_init(struct Mx1 *m, char *prog, int flag)
{
strncpy(m->prog, prog, sizeof(m->prog) - 1);
m->prog[sizeof(m->prog) - 1]= 0;
m->count_in= 0;
m->count_out= 0;
m->skipping= 0;
return(1);
}
int Mx1_report_error(struct Mx1 *m, char *text, int flag)
{
fprintf(stderr, "%s : line %d : %s\n", m->prog, m->count_in, text);
return(1);
}
int Mx1__get_word(char *line, char word[256], char **remainder, int flag)
{
char *cpt, *start;
int l;
word[0]= 0;
*remainder= NULL;
for(cpt= line; *cpt != 0 && isspace(*cpt); cpt++);
if(*cpt == 0)
return(0);
start= cpt;
for(cpt= line; *cpt != 0 && ! isspace(*cpt); cpt++);
l= cpt - start;
if(l > 0)
strncpy(word, start, l);
word[l]= 0;
*remainder= cpt;
return(1);
}
int Mx1_is_wrap(struct Mx1 *m, char wraps[][20], char *start, char **found,
int flag)
{
int i;
for(i= 0; wraps[i][0] != 0; i++)
if(strncmp(start, wraps[i], strlen(wraps[i])) == 0)
break;
if(wraps[i][0] != 0) {
if(found != NULL)
*found= wraps[i];
return(1);
}
return(0);
}
int Mx1_is_bold_wrap(struct Mx1 *m, char *start, char **found, int flag)
{
int ret;
static char bold_wraps[][20]= {
"@b{", "@dfn{", "@emph{", "@strong{", "@command{",
"" };
ret= Mx1_is_wrap(m, bold_wraps, start, found, 0);
return(ret);
}
int Mx1_is_normal_wrap(struct Mx1 *m, char *start, char **found, int flag)
{
int ret;
static char normal_wraps[][20]= {
"@var{", "@code{", "@i{", "@abbr{", "@file{", "@option{", "@samp{", "@r{",
"" };
ret= Mx1_is_wrap(m, normal_wraps, start, found, 0);
return(ret);
}
int Mx1_is_ignored_wrap(struct Mx1 *m, char *start, char **found, int flag)
{
int ret;
static char ignored_wraps[][20]= {
"@ref{", "@xref{",
"" };
ret= Mx1_is_wrap(m, ignored_wraps, start, found, 0);
return(ret);
}
int Mx1_is_any_wrap(struct Mx1 *m, char *start, char **found, int flag)
{
int ret;
ret= Mx1_is_bold_wrap(m, start, found, 0);
if(ret > 0)
return(1);
ret= Mx1_is_normal_wrap(m, start, found, 0);
if(ret > 0)
return(2);
ret= Mx1_is_ignored_wrap(m, start, found, 0);
if(ret > 0)
return(3);
return(0);
}
/* @param flag bit0= recursion
bit1= drop content of brackets
*/
int Mx1_rewrap(struct Mx1 *m, char **read_pt, char **write_pt,
char *write_base, char *envelope,
char *front, char *back, int flag)
{
char *rpt, *wpt, *ept, content[256], msg[256];
int l, ret;
rpt= *read_pt;
wpt= *write_pt;
ept= strchr(rpt, '}');
if(ept == NULL) {
sprintf(msg, "No closing bracket found for '%s'", envelope);
Mx1_report_error(m, msg, 0);
return(-1);
}
/* Mapped {...} content is subject to the rules except {...} mapping. */
l= ept - rpt;
if(flag & 2)
l= 0;
if(l > 0) {
ret= Mx1_substitute(m, rpt, content, 0, l, 1);
if(ret <= 0)
return(ret);
l= strlen(content);
}
if((wpt - write_base) + l + strlen(front) + strlen(back) > 255) {
Mx1_report_error(m, "Line length overflow while text substitution", 0);
return(-1);
}
strcpy(wpt, front);
wpt+= strlen(front);
if(l > 0)
memcpy(wpt, content, l);
wpt+= l;
strcpy(wpt, back);
wpt+= strlen(back);
(*read_pt)+= ept - rpt;
(*write_pt)= wpt;
return(1);
}
/* @param flag bit0= recursion
*/
int Mx1_substitute(struct Mx1 *m, char line_in[256], char line_out[256],
int raw, int upto, int flag)
{
char *rpt, *wpt, *found;
int ret, typ= 0;
wpt= line_out;
for(rpt= line_in; rpt - line_in < upto && *rpt != 0; rpt++) {
if(rpt - line_in < raw) {
*(wpt++)= *rpt;
continue;
}
if(*rpt == '@') {
typ= 0;
if(!(flag & 1))
typ= Mx1_is_any_wrap(m, rpt, &found, 0);
if(typ == 1) {
/* @b{...}, @command{...}, @dfn{...}, @emph{...}, @strong{...}
get mapped to \fB...\fR .
*/
rpt+= strlen(found);
ret= Mx1_rewrap(m, &rpt, &wpt, line_out,
found , "\\fB", "\\fR", flag & 1);
if(ret <= 0)
return(ret);
} else if(typ == 2) {
/* @abbr{...}, @code{...}, @file{...}, @i{...}, @option{...}, @r{...},
@ref{...}, @samp{...},@var{...}, get mapped to ... .
*/
rpt+= strlen(found);
ret= Mx1_rewrap(m, &rpt, &wpt, line_out, found, "", "", flag & 1);
if(ret <= 0)
return(ret);
} else if(typ == 3) {
/* @ref{...}, @xref{...} get mapped to empty text.
*/
rpt+= strlen(found);
ret= Mx1_rewrap(m, &rpt, &wpt, line_out, found , "", "",
(flag & 1) | 2);
if(ret <= 0)
return(ret);
} else if(strncmp(rpt, "@email{", 7) == 0 && !(flag & 1)) {
/* @email{...} gets mapped to <...> . */
rpt+= 7;
ret= Mx1_rewrap(m, &rpt, &wpt, line_out, "@email{", "<", ">", 0);
if(ret <= 0)
return(ret);
} else if(strncmp(rpt, "@minus{}", 8) == 0) {
/* @minus{} will become "-". */
if((wpt - line_out) + 1 > 255)
goto overflow;
*(wpt++)= '-';
rpt+= 7;
} else if(strncmp(rpt, "@@", 2) == 0 ||
strncmp(rpt, "@{", 2) == 0 ||
strncmp(rpt, "@}", 2) == 0) {
/* @@ , @{, @} will get stripped of their first @. */
if((wpt - line_out) + 1 > 255)
goto overflow;
*(wpt++)= *(rpt + 1);
rpt++;
} else {
if((wpt - line_out) + 1 > 255)
goto overflow;
*(wpt++)= *(rpt);
}
} else if(*rpt == '\\') {
/* "\" becomes "\\" */
if((wpt - line_out) + 2 > 255)
goto overflow;
*(wpt++)= '\\';
*(wpt++)= '\\';
} else if((wpt - line_out) + 1 > 255) {
overflow:;
Mx1_report_error(m, "Line length overflow while text substitution", 0);
return(-1);
} else
*(wpt++)= *rpt;
}
*wpt= 0;
return(1);
}
/*
@return 1= line_out is valid, 0= do not put out line_out, -1 = error
*/
int Mx1_convert(struct Mx1 *m, char line_in[256], char line_out[256], int flag)
{
int l, num, keep= 0, ret, raw, i, backslash_count;
char word[256], buf[256], *remainder, *wpt;
m->count_in++;
l= strlen(line_in);
if(m->skipping > 0) {
m->skipping--;
return(0);
}
/* The first line gets discarded. */
if(m->count_in == 1)
return(0);
/* Line start "@c man " will become "", the remainder is put out unaltered. */
if(strncmp(line_in, "@c man ", 7) == 0) {
strcpy(line_out, line_in + 7);
m->count_out++;
return(1);
}
/* Lines "@*" will be converted to ".br" */
if(strcmp(line_in, "@*") == 0) {
strcpy(line_out, ".br");
m->count_out++;
return(1);
}
/* @c man-ignore-lines N will discard N following lines.
"@c man-ignore-lines begin" discards all following lines
up to "@c man-ignore-lines end".
*/
if(strncmp(line_in, "@c man-ignore-lines ", 20) == 0) {
if(strcmp(line_in + 20, "begin") == 0) {
m->skipping--;
return(0);
} else if(strcmp(line_in + 20, "end") == 0) {
if(m->skipping < 0)
m->skipping++;
return(0);
} else if(m->skipping == 0) {
num= 0;
sscanf(line_in + 20, "%d", &num);
if(num > 0) {
m->skipping= num;
return(0);
}
}
Mx1_report_error(m, "Inappropriate use of '@c man-ignore-lines'", 0);
return(-1);
}
/* Line blocks of "@menu" "@end menu" will be discarded. */
if(strcmp(line_in, "@menu") == 0) {
m->skipping--;
return(0);
}
if(strcmp(line_in, "@end menu") == 0) {
if(m->skipping < 0)
m->skipping++;
return(0);
}
if(m->skipping)
return(0);
/* "@item -word words" becomes "\fB\-word\fR words". */
/* "@item word words" becomes "\fBword\fR words". */
if(strncmp(line_in, "@item ", 6) == 0) {
ret= Mx1__get_word(line_in + 6, word, &remainder, 0);
if(ret <= 0) {
Mx1_report_error(m, "Found no word after @item", 0);
return(0);
}
strcpy(buf, "\\fB");
if(word[0] == '-') {
if(l >= 255) {
length_overflow:;
Mx1_report_error(m, "Line length overflow while converting @item", 0);
return(-1);
}
strcat(buf, "\\");
}
/* Substitute option text */
raw= strlen(buf);
strcat(buf, word);
ret= Mx1_substitute(m, buf, line_out, raw, strlen(buf), 0);
if(ret <= 0)
return(-1);
if(strlen(line_out) + 3 + strlen(remainder) > 255)
goto length_overflow;
strcpy(buf, line_out);
strcat(buf, "\\fR");
raw= strlen(buf);
strcat(buf, remainder);
/* Substitute arguments text */
ret= Mx1_substitute(m, buf, line_out, raw, strlen(buf), 0);
if(ret <= 0)
return(-1);
m->count_out++;
return(1);
}
/* @strong{... } gets mapped to \fB...\fR . */
/* @command{... } gets mapped to \fB...\fR . */
/* @minus{} will become "-". */
/* Mapped {...} content is subject to the rules except {...} mapping. */
/* @@ , @{, @} will get stripped of their first @. */
/* "\" becomes "\\" */
if(line_in[0] != '@' ||
Mx1_is_any_wrap(m, line_in, NULL, 0) > 0 ||
strncmp(line_in, "@minus{}", 8) == 0 ||
strncmp(line_in, "@@", 2) == 0 ||
strncmp(line_in, "@{", 2) == 0 ||
strncmp(line_in, "@}", 2) == 0 ) {
keep= 1;
ret= Mx1_substitute(m, line_in, line_out, 0, strlen(line_in), 0);
if(ret <= 0)
return(-1);
}
/* Other lines which begin by "@" will be discarded. */
if(! keep) {
if(line_in[0] == '@')
return(0);
strcpy(line_out, line_in);
}
/* "-" which are not preceded by an uneven number of "\" will get
prepended one "\".
*/
l= strlen(line_out);
backslash_count= 0;
wpt= buf;
for(i= 0; i < l; i++) {
if(line_out[i] == '\\')
backslash_count++;
else if(line_out[i] == '-') {
if(backslash_count % 2 == 0)
*(wpt++)= '\\';
backslash_count= 0;
} else
backslash_count= 0;
*(wpt++)= line_out[i];
}
*wpt= 0;
strcpy(line_out, buf);
m->count_out++;
return(1);
}
int main(int argc, char **argv)
{
int ret, l, as_filter= 0, i;
char line_in[256], line_out[256], *got;
static char name_in[1024]= {"xorriso/xorriso.texi"};
static char name_out[1024]= {"xorriso/xorriso.1"};
struct Mx1 m;
FILE *fp_in= stdin, *fp_out= stdout;
Mx1_init(&m, argv[0], 0);
if(argc < 2) {
usage:;
fprintf(stderr, "usage: %s -auto|-filter [-xorrisofs]\n", argv[0]);
fprintf(stderr, " -auto xorriso/xorriso.texi -> xorriso/xorriso.1\n");
fprintf(stderr, " -filter stdin -> stdout\n");
fprintf(stderr, " -xorrisofs process xorriso/xorrisofs.texi\n");
fprintf(stderr, " -xorrecord process xorriso/xorrecord.texi\n");
fprintf(stderr, " -xorriso-tcltk process xorriso/-xorriso-tcltk.texi\n");
fprintf(stderr, " -xorriso-dd-target process xorriso/-xorriso-dd-target.texi\n");
exit(2);
}
for(i= 1; i < argc; i++) {
if(strcmp(argv[i], "-filter") == 0) {
as_filter= 1;
} else if(strcmp(argv[i], "-auto") == 0) {
as_filter= 0;
} else if(strcmp(argv[i], "-xorrisofs") == 0) {
strcpy(name_in, "xorriso/xorrisofs.texi");
strcpy(name_out, "xorriso/xorrisofs.1");
} else if(strcmp(argv[i], "-xorrecord") == 0) {
strcpy(name_in, "xorriso/xorrecord.texi");
strcpy(name_out, "xorriso/xorrecord.1");
} else if(strcmp(argv[i], "-xorriso-tcltk") == 0) {
strcpy(name_in, "xorriso/xorriso-tcltk.texi");
strcpy(name_out, "xorriso/xorriso-tcltk.1");
} else if(strcmp(argv[i], "-xorriso-dd-target") == 0) {
strcpy(name_in, "xorriso-dd-target/xorriso-dd-target.texi");
strcpy(name_out, "xorriso-dd-target/xorriso-dd-target.1");
} else if(strcmp(argv[i], "-merge_debian_isos") == 0) {
strcpy(name_in, "test/merge_debian_isos.texi");
strcpy(name_out, "test/merge_debian_isos.1");
} else {
fprintf(stderr, "%s : unknown option %s\n", argv[0], argv[i]);
goto usage;
}
}
if(!as_filter) {
fp_in= fopen(name_in, "r");
if(fp_in == NULL) {
fprintf(stderr, "%s : failed to fopen( %s ,r) : %d %s\n",
argv[0], name_in, errno, strerror(errno));
exit(3);
}
fp_out= fopen(name_out, "w");
if(fp_out == NULL) {
fprintf(stderr, "%s : failed to fopen( %s ,w) : %d %s\n",
argv[0], name_out, errno, strerror(errno));
exit(4);
}
}
while(1) {
got= fgets(line_in, sizeof(line_in), fp_in);
if(got == NULL)
break;
l= strlen(line_in);
while(l > 0) {
if(line_in[l - 1] == '\r' || line_in[l - 1] == '\n') {
line_in[l - 1] = 0;
l--;
} else
break;
}
ret= Mx1_convert(&m, line_in, line_out, 0);
if(ret < 0)
exit(1);
if(ret == 0)
continue;
fprintf(fp_out, "%s\n", line_out);
}
exit(0);
}
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