htags (1) - Linux Man Pages

htags: generate hypertext from source code.

NAME

htags - generate hypertext from source code.

SYNOPSIS

htags [-acDfFghInosTvwx][-d dbpath][-m name][-S cgidir][-t title][dir]

DESCRIPTION

Htags makes hypertext of C, C++, Yacc, Java, PHP and Assembly source code.

In advance of using this command, you must execute gtags(1) from the root directory of the source tree. Then you can execute htags from the same place. Htags makes an directory named 'HTML' and generates hypertext in it. You can start browsing from 'HTML/index.html'.

Since htags generates static hypertext as long as the -D or -f option is not specified, you can move it anywhere and browse it by any browser without web server.

You must use same parser for both gtags(1) and htags. If you use the default parser, it is not necessary to consider for it.

OPTIONS

If you are new on htags, it is recommended to invoke with the --suggest option. With the option, htags use popular options instead of you.
The following options are available:
-a, --alphabet
Make an alphabetical function index which is suitable for a large project.
--caution
Include caution message to prohibit downloading.
-c, --compact
Compress html files by gzip(1). You need to set up a web server so that gzip(1) is invoked for each compressed file. See 'HTML/.htaccess' that is generated by htags.
--cvsweb url
Include cvsweb URL. url is used as base of URL. When directory 'CVS' exists in the root directory of source project, the content of 'CVS/Repository' is used as the relative path from the base.
--cvsweb-cvsroot cvsroot
Specifies cvsroot in cvsweb URL.
-D, --dynamic
Generate object lists dynamically using CGI program. By default, object lists are generated statically. Though this option decrease both the size and the generation time of the hypertext, you need to set up a web server, and you cannot move the hypertext from the source directory.
-d, --dbpath dbpath
Specifies the directory in which 'GTAGS' and 'GRTAGS' exist. The default is the current directory.
--disable-grep
Disable grep in the search form(-f,--form).
-F, --frame
Use frame for each part of the contents.
-f, --form
Support search form using CGI program. You need to set up a web server, and you cannot move the hypertext from the source directory.
--full-path
List file names with full path in the file index. By default, list just the last component of a path.
-g, --gtags
Execute gtags(1) before creating hypertext. The -v, -w and dbpath are passed to gtags.
--gtagsconf file
Load user's configuration from file.
--gtagslabel label
label is used for the label of configuration file. The default is default.
-h, --func-header[=position]
Insert function header for each function. By default, htags doesn't generates it. You can specify the position using position argument, which allows one of before, right and after. The default position is after.
-I, --icon
Use icons instead of text for some links.
--insert-footer file
Insert custom footer derived from file before </body> tag.
--insert-header file
Insert custom header derived from file after <body> tag.
--item-order spec
Specify order of items in the top page. The spec is a string consists of item signs in order. Each sign means as follows: c: caution, s: search form, m: mains, d: definition, f: files. The default is csmdf.
-m, --main-func name
Specify the main function name. The default is main.
-n, --line-number[=columns]
Print line numbers. By default, doesn't print line numbers. The default value of columns is 4.
--no-map-file
Doesn't generate 'MAP' and 'FILEMAP' file. By default, htags generates them.
-o, --other
Pick up not only source files but also other files except for binary files.
-S, --secure-cgi cgidir
Write CGI programs into the cgidir to realize a centralised CGI program. Script alias is '/cgi-bin' by default. You can overwrite this value using config variable script_alias in 'gtags.conf'.
-s, --symbol
Make anchors not only for object definitions and references but also other symbols.
--statistics
Print statistics information.
--suggest
Htags selects popular options instead of beginners. It is equivalent to '-afghInosTxv --show-position' now.
-T, --table-flist[=fields]
Generate file list using <table> tag. The fields is used for field number in a line. The default is 5.
-t, --title title
The title of this hypertext. The default is the last component of the current directory.
--table-list
List tags using <table> tag.
--tabs number
Tab stop. The default is 8.
-v, --verbose
Verbose mode.
-w, --warning
Print warning messages.
-x, --xhtml[=version]
Generate XHTML hypertext instead of HTML. If the --frame option is specified then generate XHTML-1.0 Frameset for index.html and generate XHTML-1.0 Transitional for other files, else if version is 1.1 or config variable xhtml_version is set to 1.1 then generate XHTML-1.1 else XHTML 1.0 Transitional.
dir
The directory in which hypertext is generated. The default is the current directory.

EXAMPLES

        $ gtags -v
        $ htags -sanohITvt 'Welcome to XXX source tour!'
        $ firefox HTML/index.html

        $ htags --suggest

FILES

'GTAGS'
Tag file for object definitions.
'GRTAGS'
Tag file for object references.
'GSYMS'
Tag file for other symbols.
'GPATH'
Tag file for path of source files.
'/etc/gtags.conf', '$HOME/.globalrc'
Configuration file.
'HTML/index.html'
Index file for hypertext.
'HTML/MAP'
Mapping file for converting tag into path of hypertext. External systems can utilize this file.
'HTML/FILEMAP'
Mapping file for converting file name into path of hypertext. External systems can utilize this file.
'HTML/style.css'
Style sheet file. This file is generated when the --xhtml option is specified.

ENVIRONMENT

The following environment variables affect the execution of htags:
TMPDIR
If this variable is set, its value is used as the directory to make temporary files. The default is '/tmp'.
GTAGSCONF
If this variable is set, its value is used as the configuration file. The default is '$HOME/.globalrc'.
GTAGSLABEL
If this variable is set, its value is used as the label of configuration file. The default is default.
GTAGSCACHE
If this variable is set, its value is used as the size of B-tree cache. The default is 50000000 (bytes).
GTAGSFORCECPP
If this variable is set, each file whose suffix is 'h' is treated as a C++ source file.

CONFIGURATION

The following configuration variables affect the execution of htags: If the --xhtml option is specified then all definitions of HTML tag are ignored. Instead, you can customize the appearance using style sheet file ('style.css').
body_begin(string)
Begin tag for body. The default is '<body text=#191970 bgcolor=#f5f5dc vlink=gray>'.
body_end(string)
End tag for body. The default is '</body>'.
brace_begin(string)
Begin tag for brace. The default is '<font color=red>'.
brace_end(string)
End tag for brace. The default is '</font>'.
colorize_warned_line(boolean)
Colorize warned line using warned_line_begin and warned_line_end. The default is false.
comment_begin(string)
Begin tag for comments. The default is '<i><font color=green>'.
comment_end(string)
End tag for comments. The default is '</font></i>'.
copy_files(boolean)
Copy files instead of linking. When the -f option is used, htags make links of tag files in 'cgi-bin' directory by default.
datadir(string)
Shared data directory. The default is '/usr/local/share' but you can change the value using configure script. Htags look up template files in the 'gtags' directory in this data directory.
definition_header(no|before|right|after)
Position of function header. The default is 'no'.
disable_grep(boolean)
Disable grep in search form(-f,--form). The default is false.
dynamic(boolean)
Generate object list dynamically.
enable_idutils(boolean)
Enable idutils in search form(-f,--form). The default is false.
flist_fields(number)
Field number of file index. The default is 5.
full_path(boolean)
List file names with full path in file index. By default, list just the last component of a path.
gzipped_suffix(string)
Suffix for compressed html file. The default is 'ghtml'.
hr(string)
Horizontal rules. The default is '<hr>'.
htags_options(string)
Default options for htags. This value is inserted into the head of arguments.
include_file_suffixes(comma separated list)
Suffixes of include file. The default is 'h,hxx,hpp,H,inc.php'.
langmap(comma separated list)
Language mapping. Each comma-separated map consists of the language name, a colon, and a list of file extensions. Default mapping is 'c:.c.h,yacc:.y,asm:.s.S,java:.java,cpp:.c++.cc.cpp.cxx.hxx.hpp.C.H,php:.php.php3.phtml'.
ncol(number)
Columns of line number. The default is 4.
normal_suffix(string)
Suffix for normal html file. The default is 'html'.
no_map_file(boolean)
Doesn't generate 'MAP' and 'FILEMAP' file. The default is false.
other_files(boolean)
File index includes not only source files but also other files. The default is false.
position_begin(string)
Begin tag for position mark. The default is '<font color=gray>'.
position_end(string)
End tag for position mark. The default is '</font>'.
reserved_begin(string)
Begin tag for reserved word. The default is '<b>'.
reserved_end(string)
End tag for reserved word. The default is '</b>'.
script_alias(string)
Script alias for safe cgi script (-S).
sharp_begin(string)
Begin tag for 'define'. The default is '<font color=darkred>'.
sharp_end(string)
End tag for 'define'. The default is '</font>'.
show_position(boolean)
Show position per function definition. The default is false.
table_begin(string)
Begin tag for table. The default is '<table>'.
table_end(string)
End tag for table. The default is '</table>'.
table_flist(boolean)
Use <table> tag for file index. The default is false.
table_list(boolean)
List tags using <table> tag. The default is false.
tabs(number)
Tab stop. The default is 8.
title_begin(string)
Begin tag for Title. The default is '<h1><font color=#cc0000>'.
title_end(string)
End tag for Title. The default is '</font></h1>'.
warned_line_begin(string)
Begin tag for line which htags warned. The default is '<span style="background-color:yellow">'.
warned_line_end(string)
End tag for line which htags warned. The default is '</span>'.
xhtml_version(1.0|1.1)
XHTML version. 1.0 and 1.1 are acceptable. The default is 1.0.

DIAGNOSTICS

Htags exits with a non 0 value if an error occurred, 0 otherwise.

MESSAGE FORMAT

Verbose message has important level. The most important level is 0, the second it 1 and so on. All the message has level numbers leading blanks.

BUG

Generated hypertext is VERY LARGE. In advance, check the space of your disk.

PHP support is far from complete.

AUTHOR

Tama Communications Corporation.

HISTORY

The htags command appeared in FreeBSD 2.2.2.

SEE ALSO

gtags-parser(1), global(1), gtags(1).

GNU GLOBAL source code tag system
(http://www.gnu.org/software/global/).