unicode: use static global symbol table
A symbol table should never be created twice therefore we can make it static and global. We add locks so it is totally thread-safe, too. Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
This commit is contained in:
David Herrmann
parent
a31455a10b
commit
c9ea08d9b5
@ -41,8 +41,7 @@
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struct kmscon_font_factory;
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struct kmscon_font;
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int kmscon_font_factory_new(struct kmscon_font_factory **out,
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struct kmscon_symbol_table *st);
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int kmscon_font_factory_new(struct kmscon_font_factory **out);
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void kmscon_font_factory_ref(struct kmscon_font_factory *ff);
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void kmscon_font_factory_unref(struct kmscon_font_factory *ff);
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@ -47,7 +47,6 @@
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struct kmscon_font_factory {
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unsigned long ref;
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struct kmscon_symbol_table *st;
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FT_Library lib;
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};
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@ -93,7 +92,7 @@ static int kmscon_glyph_new(struct kmscon_glyph **out, kmscon_symbol_t key,
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memset(glyph, 0, sizeof(*glyph));
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val = kmscon_symbol_get(font->ff->st, &key, &len);
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val = kmscon_symbol_get(&key, &len);
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if (!val[0])
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goto ready;
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@ -164,14 +163,13 @@ static void kmscon_glyph_destroy(struct kmscon_glyph *glyph)
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free(glyph);
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}
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int kmscon_font_factory_new(struct kmscon_font_factory **out,
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struct kmscon_symbol_table *st)
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int kmscon_font_factory_new(struct kmscon_font_factory **out)
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{
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struct kmscon_font_factory *ff;
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FT_Error err;
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int ret;
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if (!out || !st)
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if (!out)
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return -EINVAL;
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log_debug("font: new font factory\n");
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@ -182,7 +180,6 @@ int kmscon_font_factory_new(struct kmscon_font_factory **out,
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memset(ff, 0, sizeof(*ff));
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ff->ref = 1;
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ff->st = st;
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err = FT_Init_FreeType(&ff->lib);
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if (err) {
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@ -191,7 +188,6 @@ int kmscon_font_factory_new(struct kmscon_font_factory **out,
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goto err_free;
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}
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kmscon_symbol_table_ref(ff->st);
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*out = ff;
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return 0;
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@ -225,7 +221,6 @@ void kmscon_font_factory_unref(struct kmscon_font_factory *ff)
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if (err)
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log_warn("font: cannot deinitialize FreeType library\n");
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kmscon_symbol_table_unref(ff->st);
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free(ff);
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}
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@ -249,7 +249,6 @@ static void input_event(struct kmscon_input *input,
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int kmscon_terminal_new(struct kmscon_terminal **out,
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struct ev_eloop *loop,
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struct kmscon_symbol_table *st,
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struct kmscon_font_factory *ff,
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struct uterm_video *video,
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struct kmscon_input *input)
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@ -257,7 +256,7 @@ int kmscon_terminal_new(struct kmscon_terminal **out,
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struct kmscon_terminal *term;
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int ret;
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if (!out || !loop || !st || !ff || !video || !input)
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if (!out || !loop || !ff || !video || !input)
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return -EINVAL;
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term = malloc(sizeof(*term));
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@ -278,7 +277,7 @@ int kmscon_terminal_new(struct kmscon_terminal **out,
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if (ret)
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goto err_idle;
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ret = kmscon_vte_new(&term->vte, st);
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ret = kmscon_vte_new(&term->vte);
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if (ret)
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goto err_con;
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kmscon_vte_bind(term->vte, term->console);
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@ -39,7 +39,6 @@
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#include "font.h"
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#include "gl.h"
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#include "input.h"
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#include "unicode.h"
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#include "uterm.h"
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struct kmscon_terminal;
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@ -56,7 +55,6 @@ typedef void (*kmscon_terminal_event_cb)
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int kmscon_terminal_new(struct kmscon_terminal **out,
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struct ev_eloop *loop,
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struct kmscon_symbol_table *st,
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struct kmscon_font_factory *ff,
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struct uterm_video *video,
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struct kmscon_input *input);
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13
src/ui.c
13
src/ui.c
@ -38,7 +38,6 @@
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#include "log.h"
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#include "terminal.h"
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#include "ui.h"
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#include "unicode.h"
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#include "uterm.h"
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#define LOG_SUBSYSTEM "config"
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@ -47,7 +46,6 @@ struct kmscon_ui {
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struct ev_eloop *eloop;
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struct uterm_video *video;
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struct kmscon_input *input;
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struct kmscon_symbol_table *st;
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struct kmscon_font_factory *ff;
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struct kmscon_terminal *term;
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};
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@ -97,15 +95,11 @@ int kmscon_ui_new(struct kmscon_ui **out,
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ui->video = video;
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ui->input = input;
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ret = kmscon_symbol_table_new(&ui->st);
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ret = kmscon_font_factory_new(&ui->ff);
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if (ret)
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goto err_free;
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ret = kmscon_font_factory_new(&ui->ff, ui->st);
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if (ret)
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goto err_st;
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ret = kmscon_terminal_new(&ui->term, eloop, ui->st, ui->ff, ui->video,
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ret = kmscon_terminal_new(&ui->term, eloop, ui->ff, ui->video,
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ui->input);
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if (ret)
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goto err_ff;
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@ -136,8 +130,6 @@ err_term:
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kmscon_terminal_unref(ui->term);
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err_ff:
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kmscon_font_factory_unref(ui->ff);
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err_st:
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kmscon_symbol_table_unref(ui->st);
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err_free:
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free(ui);
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return ret;
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@ -152,7 +144,6 @@ void kmscon_ui_free(struct kmscon_ui *ui)
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uterm_video_unregister_cb(ui->video, video_event, ui);
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kmscon_terminal_unref(ui->term);
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kmscon_font_factory_unref(ui->ff);
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kmscon_symbol_table_unref(ui->st);
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kmscon_input_unref(ui->input);
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uterm_video_unref(ui->video);
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ev_eloop_unref(ui->eloop);
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246
src/unicode.c
246
src/unicode.c
@ -2,7 +2,7 @@
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* kmscon - Unicode Handling
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*
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* Copyright (c) 2011 David Herrmann <dh.herrmann@googlemail.com>
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* Copyright (c) 2011 University of Tuebingen
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* Copyright (c) 2011-2012 University of Tuebingen
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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@ -64,9 +64,12 @@
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* push the new symbol into the symbol table.
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*/
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/* TODO: Remove the glib dependencies */
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#include <errno.h>
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#include <glib.h>
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#include <inttypes.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <string.h>
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#include "log.h"
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@ -81,12 +84,10 @@
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const kmscon_symbol_t kmscon_symbol_default = 0;
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static const char default_u8[] = { 0 };
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struct kmscon_symbol_table {
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unsigned long ref;
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GArray *index;
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GHashTable *symbols;
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uint32_t next_id;
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};
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static pthread_mutex_t table_mutex = PTHREAD_MUTEX_INITIALIZER;
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static uint32_t table_next_id;
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static GArray *table_index;
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static GHashTable *table_symbols;
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static guint hash_ucs4(gconstpointer key)
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{
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@ -126,66 +127,43 @@ static gboolean cmp_ucs4(gconstpointer a, gconstpointer b)
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}
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}
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int kmscon_symbol_table_new(struct kmscon_symbol_table **out)
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static void table_lock()
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{
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pthread_mutex_lock(&table_mutex);
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}
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static void table_unlock()
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{
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pthread_mutex_unlock(&table_mutex);
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}
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static int table__init()
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{
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struct kmscon_symbol_table *st;
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int ret;
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static const uint32_t *val = NULL; /* we need an lvalue for glib */
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if (!out)
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return -EINVAL;
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st = malloc(sizeof(*st));
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if (!st)
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return -ENOMEM;
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memset(st, 0, sizeof(*st));
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st->ref = 1;
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st->next_id = KMSCON_UCS4_MAX + 2;
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st->index = g_array_new(FALSE, TRUE, sizeof(uint32_t*));
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if (!st->index) {
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ret = -ENOMEM;
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goto err_free;
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}
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g_array_append_val(st->index, val);
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st->symbols = g_hash_table_new_full(hash_ucs4, cmp_ucs4,
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(GDestroyNotify) free, NULL);
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if (!st->symbols) {
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ret = -ENOMEM;
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goto err_arr;
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}
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*out = st;
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if (table_symbols)
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return 0;
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err_arr:
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g_array_unref(st->index);
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err_free:
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free(st);
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return ret;
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}
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table_next_id = KMSCON_UCS4_MAX + 2;
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void kmscon_symbol_table_ref(struct kmscon_symbol_table *st)
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{
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if (!st)
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return;
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table_index = g_array_new(FALSE, TRUE, sizeof(uint32_t*));
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if (!table_index) {
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log_err("cannot allocate table-index");
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return -ENOMEM;
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}
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++st->ref;
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}
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/* first entry is not used so add dummy */
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g_array_append_val(table_index, val);
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void kmscon_symbol_table_unref(struct kmscon_symbol_table *st)
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{
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if (!st || !st->ref)
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return;
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table_symbols = g_hash_table_new_full(hash_ucs4, cmp_ucs4,
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(GDestroyNotify) free, NULL);
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if (!table_symbols) {
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log_err("cannot allocate hash-table");
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g_array_unref(table_index);
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return -ENOMEM;
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}
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if (--st->ref)
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return;
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g_hash_table_unref(st->symbols);
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g_array_unref(st->index);
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free(st);
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return 0;
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}
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kmscon_symbol_t kmscon_symbol_make(uint32_t ucs4)
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@ -198,47 +176,6 @@ kmscon_symbol_t kmscon_symbol_make(uint32_t ucs4)
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}
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}
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kmscon_symbol_t kmscon_symbol_append(struct kmscon_symbol_table *st,
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kmscon_symbol_t sym, uint32_t ucs4)
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{
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uint32_t buf[KMSCON_UCS4_MAXLEN + 1], nsym, *nval;
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const uint32_t *ptr;
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size_t s;
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if (!st)
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return sym;
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if (ucs4 > KMSCON_UCS4_MAX) {
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log_warn("invalid ucs4 character");
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return sym;
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}
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ptr = kmscon_symbol_get(st, &sym, &s);
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if (s >= KMSCON_UCS4_MAXLEN)
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return sym;
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memcpy(buf, ptr, s * sizeof(uint32_t));
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buf[s++] = ucs4;
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buf[s++] = KMSCON_UCS4_MAX + 1;
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nsym = GPOINTER_TO_UINT(g_hash_table_lookup(st->symbols, buf));
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if (nsym)
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return nsym;
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log_debug("adding new composed symbol");
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nval = malloc(sizeof(uint32_t) * s);
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if (!nval)
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return sym;
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memcpy(nval, buf, s * sizeof(uint32_t));
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nsym = st->next_id++;
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g_hash_table_insert(st->symbols, nval, GUINT_TO_POINTER(nsym));
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g_array_append_val(st->index, nval);
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return nsym;
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}
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/*
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* This decomposes a symbol into a ucs4 string and a size value. If \sym is a
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* valid UCS4 character, this returns a pointer to \sym and writes 1 into \size.
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@ -250,8 +187,7 @@ kmscon_symbol_t kmscon_symbol_append(struct kmscon_symbol_table *st,
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* This always returns a valid value. If an error happens, the default character
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* is returned. If \size is NULL, then the size value is omitted.
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*/
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const uint32_t *kmscon_symbol_get(const struct kmscon_symbol_table *st,
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kmscon_symbol_t *sym, size_t *size)
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static const uint32_t *table__get(kmscon_symbol_t *sym, size_t *size)
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{
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uint32_t *ucs4;
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@ -261,13 +197,19 @@ const uint32_t *kmscon_symbol_get(const struct kmscon_symbol_table *st,
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return sym;
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}
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if (!st)
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goto def_value;
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if (table__init()) {
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if (size)
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*size = 1;
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return &kmscon_symbol_default;
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}
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ucs4 = g_array_index(st->index, uint32_t*,
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ucs4 = g_array_index(table_index, uint32_t*,
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*sym - (KMSCON_UCS4_MAX + 1));
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if (!ucs4)
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goto def_value;
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if (!ucs4) {
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if (size)
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*size = 1;
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return &kmscon_symbol_default;
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}
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if (size) {
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*size = 0;
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@ -276,35 +218,91 @@ const uint32_t *kmscon_symbol_get(const struct kmscon_symbol_table *st,
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}
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return ucs4;
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def_value:
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if (size)
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*size = 1;
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return &kmscon_symbol_default;
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}
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const char *kmscon_symbol_get_u8(const struct kmscon_symbol_table *st,
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kmscon_symbol_t sym, size_t *size)
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const uint32_t *kmscon_symbol_get(kmscon_symbol_t *sym, size_t *size)
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{
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const uint32_t *res;
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table_lock();
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res = table__get(sym, size);
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table_unlock();
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return res;
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}
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kmscon_symbol_t kmscon_symbol_append(kmscon_symbol_t sym, uint32_t ucs4)
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{
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uint32_t buf[KMSCON_UCS4_MAXLEN + 1], nsym, *nval;
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const uint32_t *ptr;
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size_t s;
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kmscon_symbol_t rsym;
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table_lock();
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if (table__init()) {
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rsym = sym;
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goto unlock;
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}
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if (ucs4 > KMSCON_UCS4_MAX) {
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log_warn("invalid ucs4 character");
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rsym = sym;
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goto unlock;
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}
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ptr = table__get(&sym, &s);
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if (s >= KMSCON_UCS4_MAXLEN) {
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rsym = sym;
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goto unlock;
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}
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memcpy(buf, ptr, s * sizeof(uint32_t));
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buf[s++] = ucs4;
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buf[s++] = KMSCON_UCS4_MAX + 1;
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nsym = GPOINTER_TO_UINT(g_hash_table_lookup(table_symbols, buf));
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if (nsym) {
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rsym = nsym;
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goto unlock;
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}
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log_debug("adding new composed symbol");
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nval = malloc(sizeof(uint32_t) * s);
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if (!nval) {
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rsym = sym;
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goto unlock;
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}
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memcpy(nval, buf, s * sizeof(uint32_t));
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nsym = table_next_id++;
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g_hash_table_insert(table_symbols, nval, GUINT_TO_POINTER(nsym));
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g_array_append_val(table_index, nval);
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rsym = nsym;
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unlock:
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table_unlock();
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return rsym;
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}
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const char *kmscon_symbol_get_u8(kmscon_symbol_t sym, size_t *size)
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{
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const uint32_t *ucs4;
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gchar *val;
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glong len;
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if (!st)
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goto def_value;
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ucs4 = kmscon_symbol_get(st, &sym, size);
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ucs4 = kmscon_symbol_get(&sym, size);
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val = g_ucs4_to_utf8(ucs4, *size, NULL, &len, NULL);
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if (!val || len < 0)
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goto def_value;
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*size = len;
|
||||
return val;
|
||||
|
||||
def_value:
|
||||
if (!val || len < 0) {
|
||||
if (size)
|
||||
*size = 1;
|
||||
return default_u8;
|
||||
}
|
||||
|
||||
if (size)
|
||||
*size = len;
|
||||
return val;
|
||||
}
|
||||
|
||||
void kmscon_symbol_free_u8(const char *s)
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
/*
|
||||
* kmscon - Unicode Handling
|
||||
*
|
||||
* Copyright (c) 2011 David Herrmann <dh.herrmann@googlemail.com>
|
||||
* Copyright (c) 2011-2012 David Herrmann <dh.herrmann@googlemail.com>
|
||||
* Copyright (c) 2011 University of Tuebingen
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining
|
||||
@ -26,7 +26,7 @@
|
||||
|
||||
/*
|
||||
* Unicode Handling
|
||||
* The main goal of the symbol(_table) functions is to provide a datatype which
|
||||
* The main goal of the kmscon_symbol_* functions is to provide a datatype which
|
||||
* can contain the representation of any printable character. This includes all
|
||||
* basic Unicode characters but also combined characters.
|
||||
* To avoid all the memory management we still represent a character as a single
|
||||
@ -38,7 +38,7 @@
|
||||
* every UCS4 characters is a valid kmscon_symbol_t object.
|
||||
* However, Unicode standard allows combining marks. Therefore, some characters
|
||||
* consists of more than one Unicode character.
|
||||
* A kmscon_symbol_table object provides all those combined characters as single
|
||||
* A global symbol-table provides all those combined characters as single
|
||||
* integers. You simply create a valid base character and append your combining
|
||||
* marks and the table will return a new valid kmscon_symbol_t. It is no longer
|
||||
* a valid UCS4 value, though. But no memory management is needed as all
|
||||
@ -51,24 +51,16 @@
|
||||
#include <inttypes.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
/* symbols and symbol table */
|
||||
/* symbols */
|
||||
|
||||
struct kmscon_symbol_table;
|
||||
typedef uint32_t kmscon_symbol_t;
|
||||
|
||||
extern const kmscon_symbol_t kmscon_symbol_default;
|
||||
|
||||
int kmscon_symbol_table_new(struct kmscon_symbol_table **out);
|
||||
void kmscon_symbol_table_ref(struct kmscon_symbol_table *st);
|
||||
void kmscon_symbol_table_unref(struct kmscon_symbol_table *st);
|
||||
|
||||
kmscon_symbol_t kmscon_symbol_make(uint32_t ucs4);
|
||||
kmscon_symbol_t kmscon_symbol_append(struct kmscon_symbol_table *st,
|
||||
kmscon_symbol_t sym, uint32_t ucs4);
|
||||
const uint32_t *kmscon_symbol_get(const struct kmscon_symbol_table *st,
|
||||
kmscon_symbol_t *sym, size_t *size);
|
||||
const char *kmscon_symbol_get_u8(const struct kmscon_symbol_table *st,
|
||||
kmscon_symbol_t sym, size_t *size);
|
||||
kmscon_symbol_t kmscon_symbol_append(kmscon_symbol_t sym, uint32_t ucs4);
|
||||
const uint32_t *kmscon_symbol_get(kmscon_symbol_t *sym, size_t *size);
|
||||
const char *kmscon_symbol_get_u8(kmscon_symbol_t sym, size_t *size);
|
||||
void kmscon_symbol_free_u8(const char *s);
|
||||
|
||||
/* utf8 state machine */
|
||||
|
||||
@ -104,7 +104,6 @@ enum parser_action {
|
||||
|
||||
struct kmscon_vte {
|
||||
unsigned long ref;
|
||||
struct kmscon_symbol_table *st;
|
||||
struct kmscon_console *con;
|
||||
|
||||
const char *kbd_sym;
|
||||
@ -115,7 +114,7 @@ struct kmscon_vte {
|
||||
int csi_argv[CSI_ARG_MAX];
|
||||
};
|
||||
|
||||
int kmscon_vte_new(struct kmscon_vte **out, struct kmscon_symbol_table *st)
|
||||
int kmscon_vte_new(struct kmscon_vte **out)
|
||||
{
|
||||
struct kmscon_vte *vte;
|
||||
int ret;
|
||||
@ -131,14 +130,12 @@ int kmscon_vte_new(struct kmscon_vte **out, struct kmscon_symbol_table *st)
|
||||
|
||||
memset(vte, 0, sizeof(*vte));
|
||||
vte->ref = 1;
|
||||
vte->st = st;
|
||||
vte->state = STATE_GROUND;
|
||||
|
||||
ret = kmscon_utf8_mach_new(&vte->mach);
|
||||
if (ret)
|
||||
goto err_free;
|
||||
|
||||
kmscon_symbol_table_ref(vte->st);
|
||||
*out = vte;
|
||||
return 0;
|
||||
|
||||
@ -166,7 +163,6 @@ void kmscon_vte_unref(struct kmscon_vte *vte)
|
||||
kmscon_console_unref(vte->con);
|
||||
kmscon_utf8_mach_free(vte->mach);
|
||||
kmscon_symbol_free_u8(vte->kbd_sym);
|
||||
kmscon_symbol_table_unref(vte->st);
|
||||
free(vte);
|
||||
log_debug("vte: destroying vte object\n");
|
||||
}
|
||||
@ -926,7 +922,7 @@ int kmscon_vte_handle_keyboard(struct kmscon_vte *vte,
|
||||
if (ev->unicode != KMSCON_INPUT_INVALID) {
|
||||
kmscon_symbol_free_u8(vte->kbd_sym);
|
||||
sym = kmscon_symbol_make(ev->unicode);
|
||||
vte->kbd_sym = kmscon_symbol_get_u8(vte->st, sym, len);
|
||||
vte->kbd_sym = kmscon_symbol_get_u8(sym, len);
|
||||
*u8 = vte->kbd_sym;
|
||||
return KMSCON_VTE_SEND;
|
||||
}
|
||||
|
||||
@ -45,7 +45,7 @@ enum kmscon_vte_keyboard_action {
|
||||
KMSCON_VTE_SEND,
|
||||
};
|
||||
|
||||
int kmscon_vte_new(struct kmscon_vte **out, struct kmscon_symbol_table *st);
|
||||
int kmscon_vte_new(struct kmscon_vte **out);
|
||||
void kmscon_vte_ref(struct kmscon_vte *vte);
|
||||
void kmscon_vte_unref(struct kmscon_vte *vte);
|
||||
|
||||
|
||||
@ -102,34 +102,26 @@ static void test1(struct kmscon_buffer *buf)
|
||||
|
||||
static void test2()
|
||||
{
|
||||
struct kmscon_symbol_table *st;
|
||||
int ret;
|
||||
kmscon_symbol_t sym, sym2, sym3, sym4;
|
||||
const uint32_t *str;
|
||||
size_t len, i;
|
||||
|
||||
log_info("Test2:\n");
|
||||
|
||||
ret = kmscon_symbol_table_new(&st);
|
||||
if (ret)
|
||||
return;
|
||||
|
||||
sym = kmscon_symbol_make('a');
|
||||
sym2 = kmscon_symbol_append(st, sym, '^');
|
||||
sym3 = kmscon_symbol_append(st, sym2, '^');
|
||||
sym4 = kmscon_symbol_append(st, sym, '^');
|
||||
sym2 = kmscon_symbol_append(sym, '^');
|
||||
sym3 = kmscon_symbol_append(sym2, '^');
|
||||
sym4 = kmscon_symbol_append(sym, '^');
|
||||
|
||||
log_info("equality: %i %i %i\n", sym == sym2, sym2 == sym4,
|
||||
sym3 == sym2);
|
||||
|
||||
str = kmscon_symbol_get(st, &sym3, &len);
|
||||
str = kmscon_symbol_get(&sym3, &len);
|
||||
|
||||
printf("sym3: ");
|
||||
for (i = 0; i < len; ++i)
|
||||
printf("%c", str[i]);
|
||||
printf("\n");
|
||||
|
||||
kmscon_symbol_table_unref(st);
|
||||
}
|
||||
|
||||
static void test3()
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user