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mxmldoc.c
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/*#define DEBUG 1*/
/*
* "$Id$"
*
* Documentation generator using Mini-XML, a small XML-like file parsing
* library.
*
* Copyright 2003-2010 by Michael R Sweet.
*
* These coded instructions, statements, and computer programs are the
* property of Michael R Sweet and are protected by Federal copyright
* law. Distribution and use rights are outlined in the file "COPYING"
* which should have been included with this file. If this file is
* missing or damaged, see the license at:
*
* http://www.minixml.org/
*
* Contents:
*
* main() - Main entry for test program.
* add_variable() - Add a variable or argument.
* find_public() - Find a public function, type, etc.
* get_comment_info() - Get info from comment.
* get_text() - Get the text for a node.
* load_cb() - Set the type of child nodes.
* new_documentation() - Create a new documentation tree.
* remove_directory() - Remove a directory.
* safe_strcpy() - Copy a string allowing for overlapping strings.
* scan_file() - Scan a source file.
* sort_node() - Insert a node sorted into a tree.
* update_comment() - Update a comment node.
* usage() - Show program usage...
* write_description() - Write the description text.
* write_element() - Write an element's text nodes.
* write_file() - Copy a file to the output.
* write_function() - Write documentation for a function.
* write_html() - Write HTML documentation.
* write_html_head() - Write the standard HTML header.
* write_man() - Write manpage documentation.
* write_scu() - Write a structure, class, or union.
* write_string() - Write a string, quoting HTML special chars as needed.
* write_toc() - Write a table-of-contents.
* write_tokens() - Write <Token> nodes for all APIs.
* ws_cb() - Whitespace callback for saving.
*/
/*
* Include necessary headers...
*/
#include "config.h"
#include "mxml.h"
#include <time.h>
#include <sys/stat.h>
#ifndef WIN32
# include <dirent.h>
# include <unistd.h>
# include <spawn.h>
# include <sys/wait.h>
extern char **environ;
#endif /* !WIN32 */
/*
* This program scans source and header files and produces public API
* documentation for code that conforms to the CUPS Configuration
* Management Plan (CMP) coding standards. Please see the following web
* page for details:
*
* http://www.cups.org/cmp.html
*
* Using Mini-XML, this program creates and maintains an XML representation
* of the public API code documentation which can then be converted to HTML
* as desired. The following is a poor-man's schema:
*
* <?xml version="1.0"?>
* <mxmldoc xmlns="http://www.easysw.com"
* xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
* xsi:schemaLocation="http://www.minixml.org/mxmldoc.xsd">
*
* <namespace name=""> [optional...]
* <constant name="">
* <description>descriptive text</description>
* </constant>
*
* <enumeration name="">
* <description>descriptive text</description>
* <constant name="">...</constant>
* </enumeration>
*
* <typedef name="">
* <description>descriptive text</description>
* <type>type string</type>
* </typedef>
*
* <function name="" scope="">
* <description>descriptive text</description>
* <argument name="" direction="I|O|IO" default="">
* <description>descriptive text</description>
* <type>type string</type>
* </argument>
* <returnvalue>
* <description>descriptive text</description>
* <type>type string</type>
* </returnvalue>
* <seealso>function names separated by spaces</seealso>
* </function>
*
* <variable name="" scope="">
* <description>descriptive text</description>
* <type>type string</type>
* </variable>
*
* <struct name="">
* <description>descriptive text</description>
* <variable name="">...</variable>
* <function name="">...</function>
* </struct>
*
* <union name="">
* <description>descriptive text</description>
* <variable name="">...</variable>
* </union>
*
* <class name="" parent="">
* <description>descriptive text</description>
* <class name="">...</class>
* <enumeration name="">...</enumeration>
* <function name="">...</function>
* <struct name="">...</struct>
* <variable name="">...</variable>
* </class>
* </namespace>
* </mxmldoc>
*/
/*
* Basic states for file parser...
*/
#define STATE_NONE 0 /* No state - whitespace, etc. */
#define STATE_PREPROCESSOR 1 /* Preprocessor directive */
#define STATE_C_COMMENT 2 /* Inside a C comment */
#define STATE_CXX_COMMENT 3 /* Inside a C++ comment */
#define STATE_STRING 4 /* Inside a string constant */
#define STATE_CHARACTER 5 /* Inside a character constant */
#define STATE_IDENTIFIER 6 /* Inside a keyword/identifier */
/*
* Output modes...
*/
#define OUTPUT_NONE 0 /* No output */
#define OUTPUT_HTML 1 /* Output HTML */
#define OUTPUT_XML 2 /* Output XML */
#define OUTPUT_MAN 3 /* Output nroff/man */
#define OUTPUT_TOKENS 4 /* Output docset Tokens.xml file */
/*
* Local functions...
*/
static mxml_node_t *add_variable(mxml_node_t *parent, const char *name,
mxml_node_t *type);
static mxml_node_t *find_public(mxml_node_t *node, mxml_node_t *top,
const char *name);
static char *get_comment_info(mxml_node_t *description);
static char *get_text(mxml_node_t *node, char *buffer, int buflen);
static mxml_type_t load_cb(mxml_node_t *node);
static mxml_node_t *new_documentation(mxml_node_t **mxmldoc);
static int remove_directory(const char *path);
static void safe_strcpy(char *dst, const char *src);
static int scan_file(const char *filename, FILE *fp,
mxml_node_t *doc);
static void sort_node(mxml_node_t *tree, mxml_node_t *func);
static void update_comment(mxml_node_t *parent,
mxml_node_t *comment);
static void usage(const char *option);
static void write_description(FILE *out, mxml_node_t *description,
const char *element, int summary);
static void write_element(FILE *out, mxml_node_t *doc,
mxml_node_t *element, int mode);
static void write_file(FILE *out, const char *file);
static void write_function(FILE *out, mxml_node_t *doc,
mxml_node_t *function, int level);
static void write_html(const char *section, const char *title,
const char *footerfile,
const char *headerfile,
const char *introfile, const char *cssfile,
const char *framefile,
const char *docset, const char *docversion,
const char *feedname, const char *feedurl,
mxml_node_t *doc);
static void write_html_head(FILE *out, const char *section,
const char *title, const char *cssfile);
static void write_man(const char *man_name, const char *section,
const char *title, const char *headerfile,
const char *footerfile, const char *introfile,
mxml_node_t *doc);
static void write_scu(FILE *out, mxml_node_t *doc,
mxml_node_t *scut);
static void write_string(FILE *out, const char *s, int mode);
static void write_toc(FILE *out, mxml_node_t *doc,
const char *introfile, const char *target,
int xml);
static void write_tokens(FILE *out, mxml_node_t *doc,
const char *path);
static const char *ws_cb(mxml_node_t *node, int where);
/*
* 'main()' - Main entry for test program.
*/
int /* O - Exit status */
main(int argc, /* I - Number of command-line args */
char *argv[]) /* I - Command-line args */
{
int i; /* Looping var */
int len; /* Length of argument */
FILE *fp; /* File to read */
mxml_node_t *doc; /* XML documentation tree */
mxml_node_t *mxmldoc; /* mxmldoc node */
const char *cssfile, /* CSS stylesheet file */
*docset, /* Documentation set directory */
*docversion, /* Documentation set version */
*feedname, /* Feed name for documentation set */
*feedurl, /* Feed URL for documentation set */
*footerfile, /* Footer file */
*framefile, /* Framed HTML basename */
*headerfile, /* Header file */
*introfile, /* Introduction file */
*name, /* Name of manpage */
*path, /* Path to help file for tokens */
*section, /* Section/keywords of documentation */
*title, /* Title of documentation */
*xmlfile; /* XML file */
int mode, /* Output mode */
update; /* Updated XML file */
/*
* Check arguments...
*/
cssfile = NULL;
doc = NULL;
docset = NULL;
docversion = NULL;
feedname = NULL;
feedurl = NULL;
footerfile = NULL;
framefile = NULL;
headerfile = NULL;
introfile = NULL;
mode = OUTPUT_HTML;
mxmldoc = NULL;
name = NULL;
path = NULL;
section = NULL;
title = NULL;
update = 0;
xmlfile = NULL;
for (i = 1; i < argc; i ++)
if (!strcmp(argv[i], "--help"))
{
/*
* Show help...
*/
usage(NULL);
}
else if (!strcmp(argv[i], "--css") && !cssfile)
{
/*
* Set CSS stylesheet file...
*/
i ++;
if (i < argc)
cssfile = argv[i];
else
usage(NULL);
}
else if (!strcmp(argv[i], "--docset") && !docset)
{
/*
* Set documentation set directory...
*/
i ++;
if (i < argc)
docset = argv[i];
else
usage(NULL);
}
else if (!strcmp(argv[i], "--docversion") && !docversion)
{
/*
* Set documentation set directory...
*/
i ++;
if (i < argc)
docversion = argv[i];
else
usage(NULL);
}
else if (!strcmp(argv[i], "--footer") && !footerfile)
{
/*
* Set footer file...
*/
i ++;
if (i < argc)
footerfile = argv[i];
else
usage(NULL);
}
else if (!strcmp(argv[i], "--feedname") && !feedname)
{
/*
* Set documentation set feed name...
*/
i ++;
if (i < argc)
feedname = argv[i];
else
usage(NULL);
}
else if (!strcmp(argv[i], "--feedurl") && !feedurl)
{
/*
* Set documentation set feed name...
*/
i ++;
if (i < argc)
feedurl = argv[i];
else
usage(NULL);
}
else if (!strcmp(argv[i], "--framed") && !framefile)
{
/*
* Set base filename for framed HTML output...
*/
i ++;
if (i < argc)
framefile = argv[i];
else
usage(NULL);
}
else if (!strcmp(argv[i], "--header") && !headerfile)
{
/*
* Set header file...
*/
i ++;
if (i < argc)
headerfile = argv[i];
else
usage(NULL);
}
else if (!strcmp(argv[i], "--intro") && !introfile)
{
/*
* Set intro file...
*/
i ++;
if (i < argc)
introfile = argv[i];
else
usage(NULL);
}
else if (!strcmp(argv[i], "--man") && !name)
{
/*
* Output manpage...
*/
i ++;
if (i < argc)
{
mode = OUTPUT_MAN;
name = argv[i];
}
else
usage(NULL);
}
else if (!strcmp(argv[i], "--no-output"))
mode = OUTPUT_NONE;
else if (!strcmp(argv[i], "--section") && !section)
{
/*
* Set section/keywords...
*/
i ++;
if (i < argc)
section = argv[i];
else
usage(NULL);
}
else if (!strcmp(argv[i], "--title") && !title)
{
/*
* Set title...
*/
i ++;
if (i < argc)
title = argv[i];
else
usage(NULL);
}
else if (!strcmp(argv[i], "--tokens"))
{
/*
* Output Tokens.xml file...
*/
mode = OUTPUT_TOKENS;
i ++;
if (i < argc)
path = argv[i];
else
usage(NULL);
}
else if (argv[i][0] == '-')
{
/*
* Unknown/bad option...
*/
usage(argv[i]);
}
else
{
/*
* Process XML or source file...
*/
len = (int)strlen(argv[i]);
if (len > 4 && !strcmp(argv[i] + len - 4, ".xml"))
{
/*
* Set XML file...
*/
if (xmlfile)
usage(NULL);
xmlfile = argv[i];
if (!doc)
{
if ((fp = fopen(argv[i], "r")) != NULL)
{
/*
* Read the existing XML file...
*/
doc = mxmlLoadFile(NULL, fp, load_cb);
fclose(fp);
if (!doc)
{
mxmldoc = NULL;
fprintf(stderr,
"mxmldoc: Unable to read the XML documentation file "
"\"%s\"!\n", argv[i]);
}
else if ((mxmldoc = mxmlFindElement(doc, doc, "mxmldoc", NULL,
NULL, MXML_DESCEND)) == NULL)
{
fprintf(stderr,
"mxmldoc: XML documentation file \"%s\" is missing "
"<mxmldoc> node!!\n", argv[i]);
mxmlDelete(doc);
doc = NULL;
}
}
else
{
doc = NULL;
mxmldoc = NULL;
}
if (!doc)
doc = new_documentation(&mxmldoc);
}
}
else
{
/*
* Load source file...
*/
update = 1;
if (!doc)
doc = new_documentation(&mxmldoc);
if ((fp = fopen(argv[i], "r")) == NULL)
{
fprintf(stderr, "mxmldoc: Unable to open source file \"%s\": %s\n",
argv[i], strerror(errno));
mxmlDelete(doc);
return (1);
}
else if (scan_file(argv[i], fp, mxmldoc))
{
fclose(fp);
mxmlDelete(doc);
return (1);
}
else
fclose(fp);
}
}
if (update && xmlfile)
{
/*
* Save the updated XML documentation file...
*/
if ((fp = fopen(xmlfile, "w")) != NULL)
{
/*
* Write over the existing XML file...
*/
mxmlSetWrapMargin(0);
if (mxmlSaveFile(doc, fp, ws_cb))
{
fprintf(stderr,
"mxmldoc: Unable to write the XML documentation file \"%s\": "
"%s!\n", xmlfile, strerror(errno));
fclose(fp);
mxmlDelete(doc);
return (1);
}
fclose(fp);
}
else
{
fprintf(stderr,
"mxmldoc: Unable to create the XML documentation file \"%s\": "
"%s!\n", xmlfile, strerror(errno));
mxmlDelete(doc);
return (1);
}
}
switch (mode)
{
case OUTPUT_HTML :
/*
* Write HTML documentation...
*/
write_html(section, title ? title : "Documentation", footerfile,
headerfile, introfile, cssfile, framefile, docset,
docversion, feedname, feedurl, mxmldoc);
break;
case OUTPUT_MAN :
/*
* Write manpage documentation...
*/
write_man(name, section, title, footerfile, headerfile, introfile,
mxmldoc);
break;
case OUTPUT_TOKENS :
fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<Tokens version=\"1.0\">\n", stdout);
write_tokens(stdout, mxmldoc, path);
fputs("</Tokens>\n", stdout);
break;
}
/*
* Delete the tree and return...
*/
mxmlDelete(doc);
return (0);
}
/*
* 'add_variable()' - Add a variable or argument.
*/
static mxml_node_t * /* O - New variable/argument */
add_variable(mxml_node_t *parent, /* I - Parent node */
const char *name, /* I - "argument" or "variable" */
mxml_node_t *type) /* I - Type nodes */
{
mxml_node_t *variable, /* New variable */
*node, /* Current node */
*next; /* Next node */
char buffer[16384], /* String buffer */
*bufptr; /* Pointer into buffer */
#ifdef DEBUG
fprintf(stderr, "add_variable(parent=%p, name=\"%s\", type=%p)\n",
parent, name, type);
#endif /* DEBUG */
/*
* Range check input...
*/
if (!type || !type->child)
return (NULL);
/*
* Create the variable/argument node...
*/
variable = mxmlNewElement(parent, name);
/*
* Check for a default value...
*/
for (node = type->child; node; node = node->next)
if (!strcmp(node->value.text.string, "="))
break;
if (node)
{
/*
* Default value found, copy it and add as a "default" attribute...
*/
for (bufptr = buffer; node; bufptr += strlen(bufptr))
{
if (node->value.text.whitespace && bufptr > buffer)
*bufptr++ = ' ';
strcpy(bufptr, node->value.text.string);
next = node->next;
mxmlDelete(node);
node = next;
}
mxmlElementSetAttr(variable, "default", buffer);
}
/*
* Extract the argument/variable name...
*/
if (type->last_child->value.text.string[0] == ')')
{
/*
* Handle "type (*name)(args)"...
*/
for (node = type->child; node; node = node->next)
if (node->value.text.string[0] == '(')
break;
for (bufptr = buffer; node; bufptr += strlen(bufptr))
{
if (node->value.text.whitespace && bufptr > buffer)
*bufptr++ = ' ';
strcpy(bufptr, node->value.text.string);
next = node->next;
mxmlDelete(node);
node = next;
}
}
else
{
/*
* Handle "type name"...
*/
strcpy(buffer, type->last_child->value.text.string);
mxmlDelete(type->last_child);
}
/*
* Set the name...
*/
mxmlElementSetAttr(variable, "name", buffer);
/*
* Add the remaining type information to the variable node...
*/
mxmlAdd(variable, MXML_ADD_AFTER, MXML_ADD_TO_PARENT, type);
/*
* Add new new variable node...
*/
return (variable);
}
/*
* 'find_public()' - Find a public function, type, etc.
*/
static mxml_node_t * /* I - Found node or NULL */
find_public(mxml_node_t *node, /* I - Current node */
mxml_node_t *top, /* I - Top node */
const char *name) /* I - Name of element */
{
mxml_node_t *description, /* Description node */
*comment; /* Comment node */
for (node = mxmlFindElement(node, top, name, NULL, NULL,
node == top ? MXML_DESCEND_FIRST :
MXML_NO_DESCEND);
node;
node = mxmlFindElement(node, top, name, NULL, NULL, MXML_NO_DESCEND))
{
/*
* Get the description for this node...
*/
description = mxmlFindElement(node, node, "description", NULL, NULL,
MXML_DESCEND_FIRST);
/*
* A missing or empty description signals a private node...
*/
if (!description)
continue;
/*
* Look for @private@ in the comment text...
*/
for (comment = description->child; comment; comment = comment->next)
if ((comment->type == MXML_TEXT &&
strstr(comment->value.text.string, "@private@")) ||
(comment->type == MXML_OPAQUE &&
strstr(comment->value.opaque, "@private@")))
break;
if (!comment)
{
/*
* No @private@, so return this node...
*/
return (node);
}
}
/*
* If we get here, there are no (more) public nodes...
*/
return (NULL);
}
/*
* 'get_comment_info()' - Get info from comment.
*/
static char * /* O - Info from comment */
get_comment_info(
mxml_node_t *description) /* I - Description node */
{
char text[10240], /* Description text */
since[255], /* @since value */
*ptr; /* Pointer into text */
static char info[1024]; /* Info string */
if (!description)
return ("");
get_text(description, text, sizeof(text));
for (ptr = strchr(text, '@'); ptr; ptr = strchr(ptr + 1, '@'))
{
if (!strncmp(ptr, "@deprecated@", 12))
return ("<span class=\"info\"> DEPRECATED </span>");
else if (!strncmp(ptr, "@since ", 7))
{
strncpy(since, ptr + 7, sizeof(since) - 1);
since[sizeof(since) - 1] = '\0';
if ((ptr = strchr(since, '@')) != NULL)
*ptr = '\0';
snprintf(info, sizeof(info), "<span class=\"info\"> %s </span>", since);
return (info);
}
}
return ("");
}
/*
* 'get_text()' - Get the text for a node.
*/
static char * /* O - Text in node */
get_text(mxml_node_t *node, /* I - Node to get */
char *buffer, /* I - Buffer */
int buflen) /* I - Size of buffer */
{
char *ptr, /* Pointer into buffer */
*end; /* End of buffer */
int len; /* Length of node */
mxml_node_t *current; /* Current node */
ptr = buffer;
end = buffer + buflen - 1;
for (current = node->child; current && ptr < end; current = current->next)
{
if (current->type == MXML_TEXT)
{
if (current->value.text.whitespace)
*ptr++ = ' ';
len = (int)strlen(current->value.text.string);
if (len > (int)(end - ptr))
len = (int)(end - ptr);
memcpy(ptr, current->value.text.string, len);
ptr += len;
}
else if (current->type == MXML_OPAQUE)
{
len = (int)strlen(current->value.opaque);
if (len > (int)(end - ptr))
len = (int)(end - ptr);
memcpy(ptr, current->value.opaque, len);
ptr += len;
}
}
*ptr = '\0';
return (buffer);
}
/*
* 'load_cb()' - Set the type of child nodes.
*/
static mxml_type_t /* O - Node type */
load_cb(mxml_node_t *node) /* I - Node */
{
if (!strcmp(node->value.element.name, "description"))
return (MXML_OPAQUE);
else
return (MXML_TEXT);
}
/*
* 'new_documentation()' - Create a new documentation tree.
*/
static mxml_node_t * /* O - New documentation */
new_documentation(mxml_node_t **mxmldoc)/* O - mxmldoc node */
{
mxml_node_t *doc; /* New documentation */
/*
* Create an empty XML documentation file...
*/
doc = mxmlNewXML(NULL);
*mxmldoc = mxmlNewElement(doc, "mxmldoc");
mxmlElementSetAttr(*mxmldoc, "xmlns", "http://www.easysw.com");
mxmlElementSetAttr(*mxmldoc, "xmlns:xsi",
"http://www.w3.org/2001/XMLSchema-instance");
mxmlElementSetAttr(*mxmldoc, "xsi:schemaLocation",
"http://www.minixml.org/mxmldoc.xsd");
return (doc);
}
/*
* 'remove_directory()' - Remove a directory.
*/
static int /* O - 1 on success, 0 on failure */
remove_directory(const char *path) /* I - Directory to remove */
{
#ifdef WIN32
/* TODO: Add Windows directory removal code */
#else
DIR *dir; /* Directory */
struct dirent *dent; /* Current directory entry */
char filename[1024]; /* Current filename */
struct stat fileinfo; /* File information */
if ((dir = opendir(path)) == NULL)
{
fprintf(stderr, "mxmldoc: Unable to open directory \"%s\": %s\n", path,
strerror(errno));
return (0);
}
while ((dent = readdir(dir)) != NULL)
{
/*
* Skip "." and ".."...
*/
if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
continue;
/*
* See if we have a file or directory...
*/
snprintf(filename, sizeof(filename), "%s/%s", path, dent->d_name);
if (stat(filename, &fileinfo))
{
fprintf(stderr, "mxmldoc: Unable to stat \"%s\": %s\n", filename,
strerror(errno));
closedir(dir);
return (0);
}
if (S_ISDIR(fileinfo.st_mode))
{
if (!remove_directory(filename))
{
closedir(dir);
return (0);
}
}
else if (unlink(filename))
{
fprintf(stderr, "mxmldoc: Unable to remove \"%s\": %s\n", filename,
strerror(errno));
closedir(dir);
return (0);
}
}
closedir(dir);
if (rmdir(path))
{
fprintf(stderr, "mxmldoc: Unable to remove directory \"%s\": %s\n", path,
strerror(errno));
return (0);
}
#endif /* WIN32 */
return (1);
}