402 lines
12 KiB
C
402 lines
12 KiB
C
/*
|
|
* Copyright 2010 Michael Drake <tlsa@netsurf-browser.org>
|
|
*
|
|
* This file is part of NetSurf, http://www.netsurf-browser.org/
|
|
*
|
|
* NetSurf 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; version 2 of the License.
|
|
*
|
|
* NetSurf 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/>.
|
|
*/
|
|
|
|
/** \file
|
|
* Generate HTML content for displaying directory listings (implementation).
|
|
*/
|
|
|
|
#include <stdbool.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include "content/dirlist.h"
|
|
#include "utils/messages.h"
|
|
|
|
static const char footer[] = "</div>\n</body>\n</html>\n";
|
|
|
|
static int dirlist_filesize_calculate(unsigned long *bytesize);
|
|
static int dirlist_filesize_value(unsigned long bytesize);
|
|
static char* dirlist_filesize_unit(unsigned long bytesize);
|
|
|
|
|
|
/**
|
|
* Generates the top part of an HTML directory listing page
|
|
*
|
|
* \return Top of directory listing HTML
|
|
*
|
|
* This is part of a series of functions. To generate a complete page,
|
|
* call the following functions in order:
|
|
*
|
|
* dirlist_generate_top()
|
|
* dirlist_generate_hide_columns() -- optional
|
|
* dirlist_generate_title()
|
|
* dirlist_generate_parent_link() -- optional
|
|
* dirlist_generate_headings()
|
|
* dirlist_generate_row() -- call 'n' times for 'n' rows
|
|
* dirlist_generate_bottom()
|
|
*/
|
|
|
|
bool dirlist_generate_top(char *buffer, int buffer_length)
|
|
{
|
|
int error = snprintf(buffer, buffer_length,
|
|
"<html>\n"
|
|
"<head>\n"
|
|
"<style>\n"
|
|
"html, body { margin: 0; padding: 0; }\n"
|
|
"body { background-color: #abf; padding-bottom: 2em; }\n"
|
|
"h1 { padding: 5mm; margin: 0; "
|
|
"border-bottom: 2px solid #bcf; }\n"
|
|
"p { padding: 2px 5mm; margin: 0; }\n"
|
|
"div { display: table; width: 94%%; margin: 5mm auto 2em auto; "
|
|
"padding: 0; }\n"
|
|
"a, strong { display: table-row; margin: 0; padding: 0; }\n"
|
|
"a.odd { background-color: #bcf; }\n"
|
|
"a.even { background-color: #b2c3ff; }\n"
|
|
"span { display: table-cell; }\n"
|
|
"em > span { padding-bottom: 1px; }\n"
|
|
"a + a>span { border-top: 1px solid #9af; }\n"
|
|
"span.name { padding-left: 22px; min-height: 19px;}\n"
|
|
"a.dir > span.name { font-weight: bold; }\n"
|
|
"a.dir > span.type { font-weight: bold; }\n"
|
|
"span.size { text-align: right; padding-right: 0.3em; }\n"
|
|
"span.size + span.size { text-align: left; "
|
|
"padding-right: 0; }\n");
|
|
if (error < 0 || error >= buffer_length)
|
|
/* Error or buffer too small */
|
|
return false;
|
|
else
|
|
/* OK */
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* Generates the part of an HTML directory listing page that can suppress
|
|
* particular columns
|
|
*
|
|
* \param flags flags for which cols to suppress. 0 to suppress none
|
|
* \param buffer buffer to fill with generated HTML
|
|
* \param buffer_length maximum size of buffer
|
|
* \return true iff buffer filled without error
|
|
*
|
|
* This is part of a series of functions. To generate a complete page,
|
|
* call the following functions in order:
|
|
*
|
|
* dirlist_generate_top()
|
|
* dirlist_generate_hide_columns() -- optional
|
|
* dirlist_generate_title()
|
|
* dirlist_generate_parent_link() -- optional
|
|
* dirlist_generate_headings()
|
|
* dirlist_generate_row() -- call 'n' times for 'n' rows
|
|
* dirlist_generate_bottom()
|
|
*/
|
|
|
|
bool dirlist_generate_hide_columns(int flags, char *buffer, int buffer_length)
|
|
{
|
|
int error = snprintf(buffer, buffer_length,
|
|
"%s\n%s\n%s\n%s\n%s\n",
|
|
(flags & DIRLIST_NO_NAME_COLUMN) ?
|
|
"span.name { display: none; }\n" : "",
|
|
(flags & DIRLIST_NO_TYPE_COLUMN) ?
|
|
"span.type { display: none; }\n" : "",
|
|
(flags & DIRLIST_NO_SIZE_COLUMN) ?
|
|
"span.size { display: none; }\n" : "",
|
|
(flags & DIRLIST_NO_DATE_COLUMN) ?
|
|
"span.date { display: none; }\n" : "",
|
|
(flags & DIRLIST_NO_TIME_COLUMN) ?
|
|
"span.time { display: none; }\n" : "");
|
|
if (error < 0 || error >= buffer_length)
|
|
/* Error or buffer too small */
|
|
return false;
|
|
else
|
|
/* OK */
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Generates the part of an HTML directory listing page that contains the title
|
|
*
|
|
* \param title title to use
|
|
* \param buffer buffer to fill with generated HTML
|
|
* \param buffer_length maximum size of buffer
|
|
* \return true iff buffer filled without error
|
|
*
|
|
* This is part of a series of functions. To generate a complete page,
|
|
* call the following functions in order:
|
|
*
|
|
* dirlist_generate_top()
|
|
* dirlist_generate_hide_columns() -- optional
|
|
* dirlist_generate_title()
|
|
* dirlist_generate_parent_link() -- optional
|
|
* dirlist_generate_headings()
|
|
* dirlist_generate_row() -- call 'n' times for 'n' rows
|
|
* dirlist_generate_bottom()
|
|
*/
|
|
|
|
bool dirlist_generate_title(const char *title, char *buffer, int buffer_length)
|
|
{
|
|
int error;
|
|
|
|
if (title == NULL)
|
|
title = "";
|
|
|
|
error = snprintf(buffer, buffer_length,
|
|
"</style>\n"
|
|
"<title>%s</title>\n"
|
|
"</head>\n"
|
|
"<body>\n"
|
|
"<h1>%s</h1>\n",
|
|
title, title);
|
|
if (error < 0 || error >= buffer_length)
|
|
/* Error or buffer too small */
|
|
return false;
|
|
else
|
|
/* OK */
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Generates the part of an HTML directory listing page that links to the parent
|
|
* directory
|
|
*
|
|
* \param parent url of parent directory
|
|
* \param buffer buffer to fill with generated HTML
|
|
* \param buffer_length maximum size of buffer
|
|
* \return true iff buffer filled without error
|
|
*
|
|
* This is part of a series of functions. To generate a complete page,
|
|
* call the following functions in order:
|
|
*
|
|
* dirlist_generate_top()
|
|
* dirlist_generate_hide_columns() -- optional
|
|
* dirlist_generate_title()
|
|
* dirlist_generate_parent_link() -- optional
|
|
* dirlist_generate_headings()
|
|
* dirlist_generate_row() -- call 'n' times for 'n' rows
|
|
* dirlist_generate_bottom()
|
|
*/
|
|
|
|
bool dirlist_generate_parent_link(char *parent, char *buffer, int buffer_length)
|
|
{
|
|
int error = snprintf(buffer, buffer_length,
|
|
"<p><a href=\"%s\">%s</a></p>",
|
|
parent, messages_get("FileParent"));
|
|
if (error < 0 || error >= buffer_length)
|
|
/* Error or buffer too small */
|
|
return false;
|
|
else
|
|
/* OK */
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Generates the part of an HTML directory listing page that displays the column
|
|
* headings
|
|
*
|
|
* \param buffer buffer to fill with generated HTML
|
|
* \param buffer_length maximum size of buffer
|
|
* \return true iff buffer filled without error
|
|
*
|
|
* This is part of a series of functions. To generate a complete page,
|
|
* call the following functions in order:
|
|
*
|
|
* dirlist_generate_top()
|
|
* dirlist_generate_hide_columns() -- optional
|
|
* dirlist_generate_title()
|
|
* dirlist_generate_parent_link() -- optional
|
|
* dirlist_generate_headings()
|
|
* dirlist_generate_row() -- call 'n' times for 'n' rows
|
|
* dirlist_generate_bottom()
|
|
*/
|
|
|
|
bool dirlist_generate_headings(char *buffer, int buffer_length)
|
|
{
|
|
int error = snprintf(buffer, buffer_length,
|
|
"<div>\n"
|
|
"<strong>\n"
|
|
"\t<span class=\"name\">%s</span>\n"
|
|
"\t<span class=\"type\">%s</span>\n"
|
|
"\t<span class=\"size\">%s</span>"
|
|
"<span class=\"size\"></span>\n"
|
|
"\t<span class=\"date\">%s</span>\n"
|
|
"\t<span class=\"time\">%s</span>\n"
|
|
"</strong>\n",
|
|
messages_get("FileName"), messages_get("FileType"),
|
|
messages_get("FileSize"), messages_get("FileDate"),
|
|
messages_get("FileTime"));
|
|
if (error < 0 || error >= buffer_length)
|
|
/* Error or buffer too small */
|
|
return false;
|
|
else
|
|
/* OK */
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Generates the part of an HTML directory listing page that displays a row
|
|
* in the directory contents table
|
|
*
|
|
* \param even evenness of row number, for alternate row colouring
|
|
* \param directory whether this row is for a directory (or a file)
|
|
* \param url url for row entry
|
|
* \param name name of row entry
|
|
* \param mimetype MIME type of row entry
|
|
* \param size size of row entry. If negative, size is left blank
|
|
* \param date date row entry was last modified
|
|
* \param time time row entry was last modified
|
|
* \param buffer buffer to fill with generated HTML
|
|
* \param buffer_length maximum size of buffer
|
|
* \return true iff buffer filled without error
|
|
*
|
|
* This is part of a series of functions. To generate a complete page,
|
|
* call the following functions in order:
|
|
*
|
|
* dirlist_generate_top()
|
|
* dirlist_generate_hide_columns() -- optional
|
|
* dirlist_generate_title()
|
|
* dirlist_generate_parent_link() -- optional
|
|
* dirlist_generate_headings()
|
|
* dirlist_generate_row() -- call 'n' times for 'n' rows
|
|
* dirlist_generate_bottom()
|
|
*/
|
|
|
|
bool dirlist_generate_row(bool even, bool directory, char *url, char *name,
|
|
const char *mimetype, long long size, char *date, char *time,
|
|
char *buffer, int buffer_length)
|
|
{
|
|
const char *unit;
|
|
char size_string[100];
|
|
int error;
|
|
|
|
if (size < 0) {
|
|
unit = "";
|
|
strncpy(size_string, "", sizeof size_string);
|
|
} else {
|
|
unit = messages_get(dirlist_filesize_unit((unsigned long)size));
|
|
snprintf(size_string, sizeof size_string, "%d",
|
|
dirlist_filesize_value((unsigned long)size));
|
|
}
|
|
|
|
error = snprintf(buffer, buffer_length,
|
|
"<a href=\"%s\" class=\"%s %s\">\n"
|
|
"\t<span class=\"name\">%s</span>\n"
|
|
"\t<span class=\"type\">%s</span>\n"
|
|
"\t<span class=\"size\">%s</span>"
|
|
"<span class=\"size\">%s</span>\n"
|
|
"\t<span class=\"date\">%s</span>\n"
|
|
"\t<span class=\"time\">%s</span>\n"
|
|
"</a>\n",
|
|
url, even ? "even" : "odd",
|
|
directory ? "dir" : "file",
|
|
name, mimetype, size_string, unit, date, time);
|
|
if (error < 0 || error >= buffer_length)
|
|
/* Error or buffer too small */
|
|
return false;
|
|
else
|
|
/* OK */
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Generates the bottom part of an HTML directory listing page
|
|
*
|
|
* \return Bottom of directory listing HTML
|
|
*
|
|
* This is part of a series of functions. To generate a complete page,
|
|
* call the following functions in order:
|
|
*
|
|
* dirlist_generate_top()
|
|
* dirlist_generate_hide_columns() -- optional
|
|
* dirlist_generate_title()
|
|
* dirlist_generate_parent_link() -- optional
|
|
* dirlist_generate_headings()
|
|
* dirlist_generate_row() -- call 'n' times for 'n' rows
|
|
* dirlist_generate_bottom()
|
|
*/
|
|
|
|
bool dirlist_generate_bottom(char *buffer, int buffer_length)
|
|
{
|
|
int error = snprintf(buffer, buffer_length,
|
|
"</div>\n"
|
|
"</body>\n"
|
|
"</html>\n");
|
|
if (error < 0 || error >= buffer_length)
|
|
/* Error or buffer too small */
|
|
return false;
|
|
else
|
|
/* OK */
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Obtain display value and units for filesize after conversion to B/kB/MB/GB,
|
|
* as appropriate.
|
|
*
|
|
* \param bytesize file size in bytes, updated to filesize in output units
|
|
* \return number of times bytesize has been divided by 1024
|
|
*/
|
|
|
|
int dirlist_filesize_calculate(unsigned long *bytesize)
|
|
{
|
|
int i = 0;
|
|
while (*bytesize > 1024 * 4) {
|
|
*bytesize /= 1024;
|
|
i++;
|
|
if (i == 3)
|
|
break;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
|
|
/**
|
|
* Obtain display value for filesize after conversion to B/kB/MB/GB,
|
|
* as appropriate
|
|
*
|
|
* \param bytesize file size in bytes
|
|
* \return Value to display for file size, in units given by filesize_unit()
|
|
*/
|
|
|
|
int dirlist_filesize_value(unsigned long bytesize)
|
|
{
|
|
dirlist_filesize_calculate(&bytesize);
|
|
return (int)bytesize;
|
|
}
|
|
|
|
|
|
/**
|
|
* Obtain display units for filesize after conversion to B/kB/MB/GB,
|
|
* as appropriate
|
|
*
|
|
* \param bytesize file size in bytes
|
|
* \return Units to display for file size, for value given by filesize_value()
|
|
*/
|
|
|
|
char* dirlist_filesize_unit(unsigned long bytesize)
|
|
{
|
|
const char* units[] = { "Bytes", "kBytes", "MBytes", "GBytes" };
|
|
return (char*)units[dirlist_filesize_calculate(&bytesize)];
|
|
}
|