/
mantohtml.c
1218 lines (1005 loc) · 23.2 KB
/
mantohtml.c
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/*
* Man page to HTML conversion program.
*
* Copyright 2007-2017 by Apple Inc.
* Copyright 2004-2006 by Easy Software Products.
*
* Licensed under Apache License v2.0. See the file "LICENSE" for more information.
*/
/*
* Include necessary headers.
*/
#include <cups/string-private.h>
#include <cups/array-private.h>
#include <unistd.h>
/*
* Local globals...
*/
static const char /* Start/end tags for fonts */
* const start_fonts[] = { "", "<b>", "<i>" },
* const end_fonts[] = { "", "</b>", "</i>" };
/*
* Local functions...
*/
static void html_alternate(const char *s, const char *first, const char *second, FILE *fp);
static void html_fputs(const char *s, int *font, FILE *fp);
static void html_putc(int ch, FILE *fp);
static void strmove(char *d, const char *s);
/*
* 'main()' - Convert a man page to HTML.
*/
int /* O - Exit status */
main(int argc, /* I - Number of command-line args */
char *argv[]) /* I - Command-line arguments */
{
FILE *infile, /* Input file */
*outfile; /* Output file */
char line[1024], /* Line from file */
*lineptr, /* Pointer into line */
anchor[1024], /* Anchor */
name[1024], /* Man page name */
ddpost[256]; /* Tagged list post markup */
int section = -1, /* Man page section */
pre = 0, /* Preformatted */
font = 0, /* Current font */
linenum = 0; /* Current line number */
float list_indent = 0.0f, /* Current list indentation */
nested_indent = 0.0f; /* Nested list indentation, if any */
const char *list = NULL, /* Current list, if any */
*nested = NULL; /* Nested list, if any */
const char *post = NULL; /* Text to add after the current line */
/*
* Check arguments...
*/
if (argc > 3)
{
fputs("Usage: mantohtml [filename.man [filename.html]]\n", stderr);
return (1);
}
/*
* Open files as needed...
*/
if (argc > 1)
{
if ((infile = fopen(argv[1], "r")) == NULL)
{
perror(argv[1]);
return (1);
}
}
else
infile = stdin;
if (argc > 2)
{
if ((outfile = fopen(argv[2], "w")) == NULL)
{
perror(argv[2]);
fclose(infile);
return (1);
}
}
else
outfile = stdout;
/*
* Read from input and write the output...
*/
fputs("<!DOCTYPE HTML>\n"
"<html>\n"
"<!-- SECTION: Man Pages -->\n"
"<head>\n"
"\t<link rel=\"stylesheet\" type=\"text/css\" "
"href=\"../cups-printable.css\">\n", outfile);
anchor[0] = '\0';
while (fgets(line, sizeof(line), infile))
{
size_t linelen = strlen(line); /* Length of line */
if (linelen > 0 && line[linelen - 1] == '\n')
line[linelen - 1] = '\0';
linenum ++;
if (line[0] == '.')
{
/*
* Strip leading whitespace...
*/
while (line[1] == ' ' || line[1] == '\t')
strmove(line + 1, line + 2);
/*
* Process man page commands...
*/
if (!strncmp(line, ".TH ", 4) && section < 0)
{
/*
* Grab man page title...
*/
sscanf(line + 4, "%s%d", name, §ion);
fprintf(outfile,
"\t<title>%s(%d)</title>\n"
"</head>\n"
"<body>\n"
"<h1 class=\"title\">%s(%d)</h1>\n"
"%s",
name, section, name, section, start_fonts[font]);
}
else if (section < 0)
continue;
else if (!strncmp(line, ".SH ", 4) || !strncmp(line, ".SS ", 4))
{
/*
* Grab heading...
*/
int first = 1;
fputs(end_fonts[font], outfile);
font = 0;
if (list)
{
fprintf(outfile, "</%s>\n", list);
list = NULL;
}
if (line[2] == 'H')
fputs("<h2 class=\"title\"><a name=\"", outfile);
else
fputs("<h3><a name=\"", outfile);
if (anchor[0])
{
fputs(anchor, outfile);
anchor[0] = '\0';
}
else
{
for (lineptr = line + 4; *lineptr; lineptr ++)
if (*lineptr == '\"')
continue;
else if (isalnum(*lineptr & 255))
html_putc(*lineptr, outfile);
else
html_putc('_', outfile);
}
fputs("\">", outfile);
for (lineptr = line + 4; *lineptr; lineptr ++)
{
if (*lineptr == '\"')
continue;
else if (*lineptr == ' ')
{
html_putc(' ', outfile);
first = 1;
}
else
{
if (first)
html_putc(*lineptr, outfile);
else
html_putc(tolower(*lineptr & 255), outfile);
first = 0;
}
}
if (line[2] == 'H')
fputs("</a></h2>\n", outfile);
else
fputs("</a></h3>\n", outfile);
}
else if (!strncmp(line, ".B ", 3))
{
/*
* Grab bold text...
*/
fputs(end_fonts[font], outfile);
font = 0;
if (anchor[0])
fprintf(outfile, "<a name=\"%s\">", anchor);
html_alternate(line + 3, "b", "b", outfile);
if (anchor[0])
{
fputs("</a>", outfile);
anchor[0] = '\0';
}
if (post)
{
fputs(post, outfile);
post = NULL;
}
}
else if (!strncmp(line, ".I ", 3))
{
/*
* Grab italic text...
*/
fputs(end_fonts[font], outfile);
font = 0;
if (anchor[0])
fprintf(outfile, "<a name=\"%s\">", anchor);
html_alternate(line + 3, "i", "i", outfile);
if (anchor[0])
{
fputs("</a>", outfile);
anchor[0] = '\0';
}
if (post)
{
fputs(post, outfile);
post = NULL;
}
}
else if (!strncmp(line, ".BI ", 4))
{
/*
* Alternating bold and italic text...
*/
fputs(end_fonts[font], outfile);
font = 0;
if (anchor[0])
fprintf(outfile, "<a name=\"%s\">", anchor);
html_alternate(line + 4, "b", "i", outfile);
if (anchor[0])
{
fputs("</a>", outfile);
anchor[0] = '\0';
}
if (post)
{
fputs(post, outfile);
post = NULL;
}
}
else if (!strncmp(line, ".BR ", 4))
{
/*
* Alternating bold and roman (plain) text...
*/
fputs(end_fonts[font], outfile);
font = 0;
if (anchor[0])
fprintf(outfile, "<a name=\"%s\">", anchor);
html_alternate(line + 4, "b", NULL, outfile);
if (anchor[0])
{
fputs("</a>", outfile);
anchor[0] = '\0';
}
if (post)
{
fputs(post, outfile);
post = NULL;
}
}
else if (!strncmp(line, ".IB ", 4))
{
/*
* Alternating italic and bold text...
*/
fputs(end_fonts[font], outfile);
font = 0;
if (anchor[0])
fprintf(outfile, "<a name=\"%s\">", anchor);
html_alternate(line + 4, "i", "b", outfile);
if (anchor[0])
{
fputs("</a>", outfile);
anchor[0] = '\0';
}
if (post)
{
fputs(post, outfile);
post = NULL;
}
}
else if (!strncmp(line, ".IR ", 4))
{
/*
* Alternating italic and roman (plain) text...
*/
fputs(end_fonts[font], outfile);
font = 0;
if (anchor[0])
fprintf(outfile, "<a name=\"%s\">", anchor);
html_alternate(line + 4, "i", NULL, outfile);
if (anchor[0])
{
fputs("</a>", outfile);
anchor[0] = '\0';
}
if (post)
{
fputs(post, outfile);
post = NULL;
}
}
else if (!strncmp(line, ".RB ", 4))
{
/*
* Alternating roman (plain) and bold text...
*/
fputs(end_fonts[font], outfile);
font = 0;
if (anchor[0])
fprintf(outfile, "<a name=\"%s\">", anchor);
html_alternate(line + 4, NULL, "b", outfile);
if (anchor[0])
{
fputs("</a>", outfile);
anchor[0] = '\0';
}
if (post)
{
fputs(post, outfile);
post = NULL;
}
}
else if (!strncmp(line, ".RI ", 4))
{
/*
* Alternating roman (plain) and italic text...
*/
fputs(end_fonts[font], outfile);
font = 0;
if (anchor[0])
fprintf(outfile, "<a name=\"%s\">", anchor);
html_alternate(line + 4, NULL, "i", outfile);
if (anchor[0])
{
fputs("</a>", outfile);
anchor[0] = '\0';
}
if (post)
{
fputs(post, outfile);
post = NULL;
}
}
else if (!strncmp(line, ".SB ", 4))
{
/*
* Alternating small and bold text...
*/
fputs(end_fonts[font], outfile);
font = 0;
if (anchor[0])
fprintf(outfile, "<a name=\"%s\">", anchor);
html_alternate(line + 4, "small", "b", outfile);
if (anchor[0])
{
fputs("</a>", outfile);
anchor[0] = '\0';
}
if (post)
{
fputs(post, outfile);
post = NULL;
}
}
else if (!strncmp(line, ".SM ", 4))
{
/*
* Small text...
*/
fputs(end_fonts[font], outfile);
font = 0;
if (anchor[0])
fprintf(outfile, "<a name=\"%s\">", anchor);
html_alternate(line + 4, "small", "small", outfile);
if (anchor[0])
{
fputs("</a>", outfile);
anchor[0] = '\0';
}
if (post)
{
fputs(post, outfile);
post = NULL;
}
}
else if (!strcmp(line, ".LP") || !strcmp(line, ".PP") || !strcmp(line, ".P"))
{
/*
* New paragraph...
*/
fputs(end_fonts[font], outfile);
font = 0;
if (list)
{
fprintf(outfile, "</%s>\n", list);
list = NULL;
}
fputs("<p>", outfile);
if (anchor[0])
{
fprintf(outfile, "<a name=\"%s\"></a>", anchor);
anchor[0] = '\0';
}
}
else if (!strcmp(line, ".RS") || !strncmp(line, ".RS ", 4))
{
/*
* Indent...
*/
float amount = 3.0; /* Indentation */
if (line[3])
amount = (float)atof(line + 4);
fputs(end_fonts[font], outfile);
font = 0;
if (list)
{
nested = list;
list = NULL;
nested_indent = list_indent;
list_indent = 0.0f;
}
fprintf(outfile, "<div style=\"margin-left: %.1fem;\">\n", amount - nested_indent);
}
else if (!strcmp(line, ".RE"))
{
/*
* Unindent...
*/
fputs(end_fonts[font], outfile);
font = 0;
fputs("</div>\n", outfile);
if (nested)
{
list = nested;
nested = NULL;
list_indent = nested_indent;
nested_indent = 0.0f;
}
}
else if (!strcmp(line, ".HP") || !strncmp(line, ".HP ", 4))
{
/*
* Hanging paragraph...
*
* .HP i
*/
float amount = 3.0; /* Indentation */
if (line[3])
amount = (float)atof(line + 4);
fputs(end_fonts[font], outfile);
font = 0;
if (list)
{
fprintf(outfile, "</%s>\n", list);
list = NULL;
}
fprintf(outfile, "<p style=\"margin-left: %.1fem; text-indent: %.1fem\">", amount, -amount);
if (anchor[0])
{
fprintf(outfile, "<a name=\"%s\"></a>", anchor);
anchor[0] = '\0';
}
if (line[1] == 'T')
post = "<br>\n";
}
else if (!strcmp(line, ".TP") || !strncmp(line, ".TP ", 4))
{
/*
* Tagged list...
*
* .TP i
*/
float amount = 3.0; /* Indentation */
if (line[3])
amount = (float)atof(line + 4);
fputs(end_fonts[font], outfile);
font = 0;
if (list && strcmp(list, "dl"))
{
fprintf(outfile, "</%s>\n", list);
list = NULL;
}
if (!list)
{
fputs("<dl class=\"man\">\n", outfile);
list = "dl";
list_indent = amount;
}
fputs("<dt>", outfile);
snprintf(ddpost, sizeof(ddpost), "<dd style=\"margin-left: %.1fem\">", amount);
post = ddpost;
if (anchor[0])
{
fprintf(outfile, "<a name=\"%s\"></a>", anchor);
anchor[0] = '\0';
}
}
else if (!strncmp(line, ".IP ", 4))
{
/*
* Indented paragraph...
*
* .IP x i
*/
float amount = 3.0; /* Indentation */
const char *newlist = NULL; /* New list style */
const char *newtype = NULL; /* New list numbering type */
fputs(end_fonts[font], outfile);
font = 0;
lineptr = line + 4;
while (isspace(*lineptr & 255))
lineptr ++;
if (!strncmp(lineptr, "\\(bu", 4) || !strncmp(lineptr, "\\(em", 4))
{
/*
* Bullet list...
*/
newlist = "ul";
}
else if (isdigit(*lineptr & 255))
{
/*
* Numbered list...
*/
newlist = "ol";
}
else if (islower(*lineptr & 255))
{
/*
* Lowercase alpha list...
*/
newlist = "ol";
newtype = "a";
}
else if (isupper(*lineptr & 255))
{
/*
* Lowercase alpha list...
*/
newlist = "ol";
newtype = "A";
}
while (!isspace(*lineptr & 255))
lineptr ++;
while (isspace(*lineptr & 255))
lineptr ++;
if (isdigit(*lineptr & 255))
amount = (float)atof(lineptr);
if (newlist && list && strcmp(newlist, list))
{
fprintf(outfile, "</%s>\n", list);
list = NULL;
}
if (newlist && !list)
{
if (newtype)
fprintf(outfile, "<%s type=\"%s\">\n", newlist, newtype);
else
fprintf(outfile, "<%s>\n", newlist);
list = newlist;
}
if (list)
fprintf(outfile, "<li style=\"margin-left: %.1fem;\">", amount);
else
fprintf(outfile, "<p style=\"margin-left: %.1fem;\">", amount);
if (anchor[0])
{
fprintf(outfile, "<a name=\"%s\"></a>", anchor);
anchor[0] = '\0';
}
}
else if (!strncmp(line, ".br", 3))
{
/*
* Grab line break...
*/
fputs("<br>\n", outfile);
}
else if (!strncmp(line, ".de ", 4))
{
/*
* Define macro - ignore...
*/
while (fgets(line, sizeof(line), infile))
{
linenum ++;
if (!strncmp(line, "..", 2))
break;
}
}
else if (!strncmp(line, ".ds ", 4) || !strncmp(line, ".rm ", 4) ||
!strncmp(line, ".tr ", 4) || !strncmp(line, ".hy ", 4) ||
!strncmp(line, ".IX ", 4) || !strncmp(line, ".PD", 3) ||
!strncmp(line, ".Sp", 3))
{
/*
* Ignore unused commands...
*/
}
else if (!strncmp(line, ".Vb", 3) || !strncmp(line, ".nf", 3) || !strncmp(line, ".EX", 3))
{
/*
* Start preformatted...
*/
fputs(end_fonts[font], outfile);
font = 0;
// if (list)
// {
// fprintf(outfile, "</%s>\n", list);
// list = NULL;
// }
pre = 1;
fputs("<pre class=\"man\">\n", outfile);
}
else if (!strncmp(line, ".Ve", 3) || !strncmp(line, ".fi", 3) || !strncmp(line, ".EE", 3))
{
/*
* End preformatted...
*/
fputs(end_fonts[font], outfile);
font = 0;
if (pre)
{
pre = 0;
fputs("</pre>\n", outfile);
}
}
else if (!strncmp(line, ".\\}", 3))
{
/*
* Ignore close block...
*/
}
else if (!strncmp(line, ".ie", 3) || !strncmp(line, ".if", 3) ||
!strncmp(line, ".el", 3))
{
/*
* If/else - ignore...
*/
if (strchr(line, '{') != NULL)
{
/*
* Skip whole block...
*/
while (fgets(line, sizeof(line), infile))
{
linenum ++;
if (strchr(line, '}') != NULL)
break;
}
}
}
#if 0
else if (!strncmp(line, ". ", 4))
{
/*
* Grab ...
*/
}
#endif /* 0 */
else if (!strncmp(line, ".\\\"#", 4))
{
/*
* Anchor for HTML output...
*/
strlcpy(anchor, line + 4, sizeof(anchor));
}
else if (strncmp(line, ".\\\"", 3))
{
/*
* Unknown...
*/
if ((lineptr = strchr(line, ' ')) != NULL)
*lineptr = '\0';
else if ((lineptr = strchr(line, '\n')) != NULL)
*lineptr = '\0';
fprintf(stderr, "mantohtml: Unknown man page command \'%s\' on line %d.\n", line, linenum);
}
/*
* Skip continuation lines...
*/
lineptr = line + strlen(line) - 1;
if (lineptr >= line && *lineptr == '\\')
{
while (fgets(line, sizeof(line), infile))
{
linenum ++;
lineptr = line + strlen(line) - 2;
if (lineptr < line || *lineptr != '\\')
break;
}
}
}
else
{
/*
* Process man page text...
*/
html_fputs(line, &font, outfile);
putc('\n', outfile);
if (post)
{
fputs(post, outfile);
post = NULL;
}
}
}
fprintf(outfile, "%s\n", end_fonts[font]);
font = 0;
if (list)
{
fprintf(outfile, "</%s>\n", list);
list = NULL;
}
fputs("</body>\n"
"</html>\n", outfile);
/*
* Close files...
*/
if (infile != stdin)
fclose(infile);
if (outfile != stdout)
fclose(outfile);
/*
* Return with no errors...
*/
return (0);
}
/*
* 'html_alternate()' - Alternate words between two styles of text.
*/
static void
html_alternate(const char *s, /* I - String */
const char *first, /* I - First style or NULL */
const char *second, /* I - Second style of NULL */
FILE *fp) /* I - File */
{
int i = 0; /* Which style */
int quote = 0; /* Saw quote? */
int dolinks, /* Do hyperlinks to other man pages? */
link = 0; /* Doing a link now? */
/*
* Skip leading whitespace...
*/
while (isspace(*s & 255))
s ++;
dolinks = first && !strcmp(first, "b") && !second;
while (*s)
{
if (!i && dolinks)
{
/*
* See if we need to make a link to a man page...
*/
const char *end; /* End of current word */
const char *next; /* Start of next word */
for (end = s; *end && !isspace(*end & 255); end ++);
for (next = end; isspace(*next & 255); next ++);
if (isalnum(*s & 255) && *next == '(')
{
/*
* See if the man file is available locally...
*/
char name[1024], /* Name */
manfile[1024], /* Man page filename */
manurl[1024]; /* Man page URL */
strlcpy(name, s, sizeof(name));
if ((size_t)(end - s) < sizeof(name))
name[end - s] = '\0';
snprintf(manfile, sizeof(manfile), "%s.man", name);
snprintf(manurl, sizeof(manurl), "man-%s.html?TOPIC=Man+Pages", name);
if (!access(manfile, 0))
{
/*
* Local man page, do a link...
*/
fprintf(fp, "<a href=\"%s\">", manurl);
link = 1;
}
}
}
if (!i && first)
fprintf(fp, "<%s>", first);
else if (i && second)
fprintf(fp, "<%s>", second);
while ((!isspace(*s & 255) || quote) && *s)
{
if (*s == '\"')
quote = !quote;
if (*s == '\\' && s[1])
{
s ++;
html_putc(*s++, fp);
}
else
html_putc(*s++, fp);
}
if (!i && first)
fprintf(fp, "</%s>", first);
else if (i && second)
fprintf(fp, "</%s>", second);
if (i && link)
{
fputs("</a>", fp);
link = 0;
}
i = 1 - i;
/*
* Skip trailing whitespace...
*/
while (isspace(*s & 255))
s ++;
}