From cca66b9ec4e494c1d919bff0f71a820d8afab1fa Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:24:48 +0200 Subject: Adding upstream version 1.2.2. Signed-off-by: Daniel Baumann --- src/extension/db.cpp | 327 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 327 insertions(+) create mode 100644 src/extension/db.cpp (limited to 'src/extension/db.cpp') diff --git a/src/extension/db.cpp b/src/extension/db.cpp new file mode 100644 index 0000000..1fb8763 --- /dev/null +++ b/src/extension/db.cpp @@ -0,0 +1,327 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Functions to keep a listing of all modules in the system. Has its + * own file mostly for abstraction reasons, but is pretty simple + * otherwise. + * + * Authors: + * Ted Gould + * Lauris Kaplinski + * + * Copyright (C) 2002-2004 Authors + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#include "db.h" + +#include "implementation/script.h" +#include "input.h" +#include "output.h" +#include "effect.h" + +/* Globals */ + +/* Namespaces */ + +namespace Inkscape { +namespace Extension { + +/** This is the actual database object. There is only one of these */ +DB db; + +/* Types */ + +DB::DB (void) = default; + + +struct ModuleInputCmp { + bool operator()(Input* module1, Input* module2) const { + + // Ensure SVG files are at top + int n1 = 0; + int n2 = 0; + // 12345678901234567890123456789012 + if (strncmp(module1->get_id(),"org.inkscape.input.svg", 22) == 0) n1 = 1; + if (strncmp(module2->get_id(),"org.inkscape.input.svg", 22) == 0) n2 = 1; + if (strncmp(module1->get_id(),"org.inkscape.input.svgz", 23) == 0) n1 = 2; + if (strncmp(module2->get_id(),"org.inkscape.input.svgz", 23) == 0) n2 = 2; + + if (n1 != 0 && n2 != 0) return (n1 < n2); + if (n1 != 0) return true; + if (n2 != 0) return false; + + // GDK filetypenames begin with lower case letters and thus are sorted at the end. + // Special case "sK1" which starts with a lower case letter to keep it out of GDK region. + if (strncmp(module1->get_id(),"org.inkscape.input.sk1", 22) == 0) { + return ( strcmp("SK1", module2->get_filetypename()) <= 0 ); + } + if (strncmp(module2->get_id(),"org.inkscape.input.sk1", 22) == 0) { + return ( strcmp(module1->get_filetypename(), "SK1" ) <= 0 ); + } + + return ( strcmp(module1->get_filetypename(), module2->get_filetypename()) <= 0 ); + } +}; + + +struct ModuleOutputCmp { + bool operator()(Output* module1, Output* module2) const { + + // Ensure SVG files are at top + int n1 = 0; + int n2 = 0; + // 12345678901234567890123456789012 + if (strncmp(module1->get_id(),"org.inkscape.output.png.inkscape", 32) == 0) n1 = 1; + if (strncmp(module2->get_id(),"org.inkscape.output.png.inkscape", 32) == 0) n2 = 1; + if (strncmp(module1->get_id(),"org.inkscape.output.svg.inkscape", 32) == 0) n1 = 1; + if (strncmp(module2->get_id(),"org.inkscape.output.svg.inkscape", 32) == 0) n2 = 1; + if (strncmp(module1->get_id(),"org.inkscape.output.svg.plain", 29) == 0) n1 = 2; + if (strncmp(module2->get_id(),"org.inkscape.output.svg.plain", 29) == 0) n2 = 2; + if (strncmp(module1->get_id(),"org.inkscape.output.svgz.inkscape", 33) == 0) n1 = 3; + if (strncmp(module2->get_id(),"org.inkscape.output.svgz.inkscape", 33) == 0) n2 = 3; + if (strncmp(module1->get_id(),"org.inkscape.output.svgz.plain", 30) == 0) n1 = 4; + if (strncmp(module2->get_id(),"org.inkscape.output.svgz.plain", 30) == 0) n2 = 4; + if (strncmp(module1->get_id(),"org.inkscape.output.scour", 25) == 0) n1 = 5; + if (strncmp(module2->get_id(),"org.inkscape.output.scour", 25) == 0) n2 = 5; + if (strncmp(module1->get_id(),"org.inkscape.output.ZIP", 23) == 0) n1 = 6; + if (strncmp(module2->get_id(),"org.inkscape.output.ZIP", 23) == 0) n2 = 6; + if (strncmp(module1->get_id(),"org.inkscape.output.LAYERS", 26) == 0) n1 = 7; + if (strncmp(module2->get_id(),"org.inkscape.output.LAYERS", 26) == 0) n2 = 7; + + if (n1 != 0 && n2 != 0) return (n1 < n2); + if (n1 != 0) return true; + if (n2 != 0) return false; + + // Special case "sK1" which starts with a lower case letter. + if (strncmp(module1->get_id(),"org.inkscape.output.sk1", 23) == 0) { + return ( strcmp("SK1", module2->get_filetypename()) <= 0 ); + } + if (strncmp(module2->get_id(),"org.inkscape.output.sk1", 23) == 0) { + return ( strcmp(module1->get_filetypename(), "SK1" ) <= 0 ); + } + // special case: two extensions for the same file type. I only one of them is a script, prefer the other one + if (Glib::ustring(module1->get_extension()).lowercase() == Glib::ustring(module2->get_extension()).lowercase()) { + bool module1_is_script = dynamic_cast(module1->get_imp()); + bool module2_is_script = dynamic_cast(module2->get_imp()); + if (module1_is_script != module2_is_script) { + return module1_is_script ? false : true; + } + } + return ( strcmp(module1->get_filetypename(), module2->get_filetypename()) <= 0 ); + } +}; + + +/** + \brief Add a module to the module database + \param module The module to be registered. +*/ +void +DB::register_ext (Extension *module) +{ + g_return_if_fail(module != nullptr); + g_return_if_fail(module->get_id() != nullptr); + + // only add to list if it's a never-before-seen module + bool add_to_list = + ( moduledict.find(module->get_id()) == moduledict.end()); + + //printf("Registering: '%s' '%s' add:%d\n", module->get_id(), module->get_name(), add_to_list); + moduledict[module->get_id()] = module; + + if (add_to_list) { + modulelist.push_back( module ); + } +} + +/** + \brief This function removes a module from the database + \param module The module to be removed. +*/ +void +DB::unregister_ext (Extension * module) +{ + g_return_if_fail(module != nullptr); + g_return_if_fail(module->get_id() != nullptr); + + // printf("Extension DB: removing %s\n", module->get_id()); + moduledict.erase(moduledict.find(module->get_id())); + // only remove if it's not there any more + if ( moduledict.find(module->get_id()) != moduledict.end()) + modulelist.remove(module); +} + +/** + \return A reference to the Inkscape::Extension::Extension specified by the input key. + \brief This function looks up a Inkscape::Extension::Extension by using its unique + id. It then returns a reference to that module. + \param key The unique ID of the module + + Retrieves a module by name; if non-NULL, it refs the returned + module; the caller is responsible for releasing that reference + when it is no longer needed. +*/ +Extension * +DB::get (const gchar *key) const +{ + if (key == nullptr) return nullptr; + + auto it = moduledict.find(key); + if (it == moduledict.end()) + return nullptr; + + Extension *mod = it->second; + assert(mod); + + if ( !mod || mod->deactivated() ) + return nullptr; + + return mod; +} + +/** + \return none + \brief A function to execute another function with every entry + in the database as a parameter. + \param in_func The function to execute for every module + \param in_data A data pointer that is also passed to in_func + + Enumerates the modules currently in the database, calling a given + callback for each one. +*/ +void +DB::foreach (void (*in_func)(Extension * in_plug, gpointer in_data), gpointer in_data) +{ + std::list ::iterator cur; + + for (cur = modulelist.begin(); cur != modulelist.end(); ++cur) { + // printf("foreach: %s\n", (*cur)->get_id()); + in_func((*cur), in_data); + } +} + +/** + \return none + \brief The function to look at each module and see if it is + an input module, then add it to the list. + \param in_plug Module to be examined + \param data The list to be attached to + + The first thing that is checked is if this module is an input + module. If it is, then it is added to the list which is passed + in through \c data. +*/ +void +DB::input_internal (Extension * in_plug, gpointer data) +{ + if (dynamic_cast(in_plug)) { + InputList * ilist; + Input * imod; + + imod = dynamic_cast(in_plug); + ilist = reinterpret_cast(data); + + ilist->push_back(imod); + // printf("Added to input list: %s\n", imod->get_id()); + } +} + +/** + \return none + \brief The function to look at each module and see if it is + an output module, then add it to the list. + \param in_plug Module to be examined + \param data The list to be attached to + + The first thing that is checked is if this module is an output + module. If it is, then it is added to the list which is passed + in through \c data. +*/ +void +DB::output_internal (Extension * in_plug, gpointer data) +{ + if (dynamic_cast(in_plug)) { + OutputList * olist; + Output * omod; + + omod = dynamic_cast(in_plug); + olist = reinterpret_cast(data); + + olist->push_back(omod); + // printf("Added to output list: %s\n", omod->get_id()); + } + + return; +} + +/** + \return none + \brief The function to look at each module and see if it is + an effect module, then add it to the list. + \param in_plug Module to be examined + \param data The list to be attached to + + The first thing that is checked is if this module is an effect + module. If it is, then it is added to the list which is passed + in through \c data. +*/ +void +DB::effect_internal (Extension * in_plug, gpointer data) +{ + if (dynamic_cast(in_plug)) { + EffectList * elist; + Effect * emod; + + emod = dynamic_cast(in_plug); + elist = reinterpret_cast(data); + + elist->push_back(emod); + // printf("Added to effect list: %s\n", emod->get_id()); + } + + return; +} + +/** + \brief Creates a list of all the Input extensions + \param ou_list The list that is used to put all the extensions in + + Calls the database \c foreach function with \c input_internal. +*/ +DB::InputList & +DB::get_input_list (DB::InputList &ou_list) +{ + foreach(input_internal, (gpointer)&ou_list); + ou_list.sort( ModuleInputCmp() ); + return ou_list; +} + +/** + \brief Creates a list of all the Output extensions + \param ou_list The list that is used to put all the extensions in + + Calls the database \c foreach function with \c output_internal. +*/ +DB::OutputList & +DB::get_output_list (DB::OutputList &ou_list) +{ + foreach(output_internal, (gpointer)&ou_list); + ou_list.sort( ModuleOutputCmp() ); + return ou_list; +} + +/** + \brief Creates a list of all the Effect extensions + \param ou_list The list that is used to put all the extensions in + + Calls the database \c foreach function with \c effect_internal. +*/ +DB::EffectList & +DB::get_effect_list (DB::EffectList &ou_list) +{ + foreach(effect_internal, (gpointer)&ou_list); + return ou_list; +} + +} } /* namespace Extension, Inkscape */ -- cgit v1.2.3