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/* sourcecode.vala
*
* Copyright (C) 2008-2009 Didier Villevalois
* Copyright (C) 2008-2012 Florian Brosch
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Author:
* Didier 'Ptitjes Villevalois <ptitjes@free.fr>
*/
public class Valadoc.Content.SourceCode : ContentElement, Inline {
public enum Language {
UNKNOWN,
GENIE,
VALA,
XML,
C;
public static Language from_path (string path) {
int pos = path.last_index_of (".");
if (pos < 0) {
return Language.UNKNOWN;
}
string ext = path.substring (pos + 1);
return from_string (ext, true);
}
public static Language from_string (string str, bool is_extension = false) {
switch (str) {
case "genie":
if (is_extension) {
return Language.UNKNOWN;
}
return Language.GENIE;
case "gs":
return Language.GENIE;
case "xml":
return Language.XML;
case "vala":
return Language.VALA;
case "c":
case "h":
return Language.C;
}
return Language.UNKNOWN;
}
public unowned string to_string () {
switch (this) {
case Language.GENIE:
return "genie";
case Language.VALA:
return "vala";
case Language.XML:
return "xml";
case Language.C:
return "c";
}
assert_not_reached ();
}
}
public string code {
get;
set;
}
public Run? highlighted_code {
get;
private set;
}
public Language language {
get;
set;
}
internal SourceCode () {
base ();
_language = Language.VALA;
}
private string? get_path (string path, Api.Node container, string source_file_path,
ErrorReporter reporter)
{
// search relative to our file
if (!Path.is_absolute (path)) {
string relative_to_file = Path.build_path (Path.DIR_SEPARATOR_S,
Path.get_dirname (source_file_path),
path);
if (FileUtils.test (relative_to_file, FileTest.EXISTS | FileTest.IS_REGULAR)) {
return (owned) relative_to_file;
}
}
// search relative to the current directory / absolute path
if (!FileUtils.test (path, FileTest.EXISTS | FileTest.IS_REGULAR)) {
string node_segment = (container is Api.Package)? "" : container.get_full_name () + ": ";
code = "File '%s' does not exist".printf (path);
reporter.simple_warning ("%s: %s{{{".printf (source_file_path, node_segment),
"%s", code);
return null;
}
return path;
}
private void load_source_code (string _path, Api.Node container, string source_file_path,
ErrorReporter reporter)
{
string? path = get_path (_path, container, source_file_path, reporter);
if (path == null) {
return ;
}
try {
string content = null;
FileUtils.get_contents (path, out content);
_language = Language.from_path (path);
code = (owned) content;
} catch (FileError err) {
string node_segment = (container is Api.Package)? "" : container.get_full_name () + ": ";
reporter.simple_error ("%s: %s{{{".printf (source_file_path, node_segment),
"Can't read file '%s': %s", path, err.message);
}
}
private inline bool is_empty_string (string line) {
for (int i = 0; line[i] != '\0'; i++) {
if (line[i].isspace () == false) {
return false;
}
}
return true;
}
private string strip_code (string code) {
string[] lines = code.split ("\n");
for (int i = lines.length - 1; i >= 0 && is_empty_string (lines[i]); i--) {
lines[i] = null;
}
string** _lines = lines;
for (int i = 0; lines[i] != null && is_empty_string (lines[i]); i++) {
_lines = &lines[i + 1];
}
return string.joinv ("\n", (string[]) _lines);
}
public override void check (Api.Tree api_root, Api.Node container, string file_path,
ErrorReporter reporter, Settings settings)
{
string[] splitted = code.split ("\n", 2);
if (splitted[0].strip () == "") {
code = splitted[1] ?? "";
} else if (splitted[0].has_prefix ("#!")) {
unowned string start = (string) (((char*) splitted[0]) + 2);
if (start.has_prefix ("include:")) {
start = (string) (((char*) start) + 8);
string path = start.strip ();
load_source_code (path, container, file_path, reporter);
} else {
string name = start._strip ().ascii_down ();
_language = Language.from_string (name);
code = splitted[1] ?? "";
if (_language == Language.UNKNOWN && name != "none") {
string node_segment = (container is Api.Package)? "" : container.get_full_name () + ": ";
reporter.simple_warning ("%s: %s{{{".printf (file_path, node_segment),
"Unsupported programming language '%s'", name);
}
}
}
code = strip_code (code);
if (_language == Language.VALA) {
highlighted_code = api_root.highlighter.highlight_vala (code);
} else if (_language == Language.XML) {
highlighted_code = api_root.highlighter.highlight_xml (code);
} else if (_language == Language.C) {
highlighted_code = api_root.highlighter.highlight_c (code);
} else {
highlighted_code = new Run (Run.Style.MONOSPACED);
highlighted_code.content.add (new Text (code));
}
}
public override void accept (ContentVisitor visitor) {
visitor.visit_source_code (this);
}
public override void accept_children (ContentVisitor visitor) {
if (highlighted_code != null) {
highlighted_code.accept (visitor);
}
}
public override bool is_empty () {
// empty source blocks are visible as well
return false;
}
public override ContentElement copy (ContentElement? new_parent = null) {
SourceCode source_code = new SourceCode ();
source_code.parent = new_parent;
source_code.language = language;
source_code.code = code;
return source_code;
}
}
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