fix: -Wunsafe-buffer-usage in electron::SetFontDefaults() (32-x-y) (#44030)
* fix: -Wunsafe-buffer-usage in electron::SetFontDefaults() (#44014) * refactor: reduce code duplication in WebContentsPreferences::OverrideWebkitPrefs() * refactor: limit scope of web_preferences temporary in ElectronBrowserClient::OverrideWebkitPrefs() * chore: remove redundant static keyword on function in anonymous namespace * refactor: slightly more explicit typing * refactor: remove unnecessary utf16 -> utf8 -> utf16 conversion steps * chore: remove unused #includes * refactor: use string_view.rfind() instead of base::RSplitStringOnce() base::RSplitStringOnce() does not exist in Chromium 128
This commit is contained in:
Charles Kerr
GitHub
parent
e69f5bc850
commit
956677b66a
1 changed files with 48 additions and 75 deletions
|
|
@ -4,13 +4,11 @@
|
|||
|
||||
#include "shell/browser/font_defaults.h"
|
||||
|
||||
#include <array>
|
||||
#include <string>
|
||||
#include <string_view>
|
||||
|
||||
#include "base/stl_util.h"
|
||||
#include "base/strings/strcat.h"
|
||||
#include "base/strings/utf_string_conversions.h"
|
||||
#include "base/containers/fixed_flat_map.h"
|
||||
#include "base/containers/map_util.h"
|
||||
#include "chrome/common/pref_names.h"
|
||||
#include "chrome/grit/platform_locale_settings.h"
|
||||
#include "third_party/blink/public/common/web_preferences/web_preferences.h"
|
||||
|
|
@ -107,88 +105,63 @@ const FontDefault kFontDefaults[] = {
|
|||
|
||||
// ^^^^^ DO NOT EDIT ^^^^^
|
||||
|
||||
// Get `kFontDefault`'s default fontname for [font family, script].
|
||||
// e.g. ("webkit.webprefs.fonts.fixed", "Zyyy") -> "Monospace"
|
||||
std::string GetDefaultFont(const std::string_view family_name,
|
||||
const std::string_view script_name) {
|
||||
const std::string pref_name = base::StrCat({family_name, ".", script_name});
|
||||
auto MakeDefaultFontCopier() {
|
||||
using namespace prefs;
|
||||
using WP = blink::web_pref::WebPreferences;
|
||||
using FamilyMap = blink::web_pref::ScriptFontFamilyMap;
|
||||
|
||||
for (const FontDefault& pref : kFontDefaults) {
|
||||
if (pref_name == pref.pref_name) {
|
||||
return l10n_util::GetStringUTF8(pref.resource_id);
|
||||
// Map from a family name (e.g. "webkit.webprefs.fonts.fixed") to a
|
||||
// Pointer-to-Member of the location in WebPreferences of its
|
||||
// ScriptFontFamilyMap (e.g. &WebPreferences::fixed_font_family_map)
|
||||
static constexpr auto FamilyMapByName =
|
||||
base::MakeFixedFlatMap<std::string_view, FamilyMap WP::*>({
|
||||
{kWebKitStandardFontFamilyMap, &WP::standard_font_family_map},
|
||||
{kWebKitFixedFontFamilyMap, &WP::fixed_font_family_map},
|
||||
{kWebKitSerifFontFamilyMap, &WP::serif_font_family_map},
|
||||
{kWebKitSansSerifFontFamilyMap, &WP::sans_serif_font_family_map},
|
||||
{kWebKitCursiveFontFamilyMap, &WP::cursive_font_family_map},
|
||||
});
|
||||
|
||||
WP defaults;
|
||||
|
||||
// Populate `defaults`'s ScriptFontFamilyMaps with the values from
|
||||
// the kFontDefaults array in the "DO NOT EDIT" section of this file.
|
||||
//
|
||||
// The kFontDefaults's `pref_name` field is built as `${family}.${script}`,
|
||||
// so splitting on the last '.' gives the family and script: a pref key of
|
||||
// "webkit.webprefs.fonts.fixed.Zyyy" splits into family name
|
||||
// "webkit.webprefs.fonts.fixed" and script "Zyyy". (Yes, "Zyyy" is real.
|
||||
// See pref_font_script_names-inl.h for the full list :)
|
||||
for (const auto& [pref_name_cstr, resource_id] : kFontDefaults) {
|
||||
const std::string_view pref_name = pref_name_cstr;
|
||||
const auto pos = pref_name.rfind('.');
|
||||
const auto family = pref_name.substr(0U, pos);
|
||||
const auto script = pref_name.substr(pos + 1U);
|
||||
if (auto* family_map_ptr = base::FindOrNull(FamilyMapByName, family)) {
|
||||
FamilyMap& family_map = defaults.**family_map_ptr;
|
||||
family_map[std::string{script}] = l10n_util::GetStringUTF16(resource_id);
|
||||
}
|
||||
}
|
||||
|
||||
return std::string{};
|
||||
}
|
||||
|
||||
// Each font family has kWebKitScriptsForFontFamilyMapsLength scripts.
|
||||
// This is a lookup array for script_index -> fontname
|
||||
using PerFamilyFonts =
|
||||
std::array<std::u16string, prefs::kWebKitScriptsForFontFamilyMapsLength>;
|
||||
|
||||
PerFamilyFonts MakeCacheForFamily(const std::string_view family_name) {
|
||||
PerFamilyFonts ret;
|
||||
for (size_t i = 0; i < prefs::kWebKitScriptsForFontFamilyMapsLength; ++i) {
|
||||
const char* script_name = prefs::kWebKitScriptsForFontFamilyMaps[i];
|
||||
ret[i] = base::UTF8ToUTF16(GetDefaultFont(family_name, script_name));
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
void FillFontFamilyMap(const PerFamilyFonts& cache,
|
||||
blink::web_pref::ScriptFontFamilyMap& font_family_map) {
|
||||
for (size_t i = 0; i < prefs::kWebKitScriptsForFontFamilyMapsLength; ++i) {
|
||||
if (const std::u16string& fontname = cache[i]; !fontname.empty()) {
|
||||
char const* const script_name = prefs::kWebKitScriptsForFontFamilyMaps[i];
|
||||
font_family_map[script_name] = fontname;
|
||||
// Lambda that copies all of `default`'s fonts into `prefs`
|
||||
auto copy_default_fonts_to_web_prefs = [defaults](WP* prefs) {
|
||||
for (const auto [_, family_map_ptr] : FamilyMapByName) {
|
||||
const FamilyMap& src = defaults.*family_map_ptr;
|
||||
FamilyMap& tgt = prefs->*family_map_ptr;
|
||||
for (const auto& [key, val] : src)
|
||||
tgt[key] = val;
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
return copy_default_fonts_to_web_prefs;
|
||||
}
|
||||
|
||||
struct FamilyCache {
|
||||
std::string_view family_name;
|
||||
|
||||
// where to find the font_family_map in a WebPreferences instance
|
||||
blink::web_pref::ScriptFontFamilyMap blink::web_pref::WebPreferences::*
|
||||
map_offset;
|
||||
|
||||
PerFamilyFonts fonts = {};
|
||||
};
|
||||
|
||||
static auto MakeCache() {
|
||||
// the font families whose defaults we want to cache
|
||||
std::array<FamilyCache, 5> cache{{
|
||||
{prefs::kWebKitStandardFontFamilyMap,
|
||||
&blink::web_pref::WebPreferences::standard_font_family_map},
|
||||
{prefs::kWebKitFixedFontFamilyMap,
|
||||
&blink::web_pref::WebPreferences::fixed_font_family_map},
|
||||
{prefs::kWebKitSerifFontFamilyMap,
|
||||
&blink::web_pref::WebPreferences::serif_font_family_map},
|
||||
{prefs::kWebKitSansSerifFontFamilyMap,
|
||||
&blink::web_pref::WebPreferences::sans_serif_font_family_map},
|
||||
{prefs::kWebKitCursiveFontFamilyMap,
|
||||
&blink::web_pref::WebPreferences::cursive_font_family_map},
|
||||
}};
|
||||
|
||||
// populate the cache
|
||||
for (FamilyCache& row : cache) {
|
||||
row.fonts = MakeCacheForFamily(row.family_name);
|
||||
}
|
||||
|
||||
return cache;
|
||||
}
|
||||
|
||||
} // namespace
|
||||
|
||||
namespace electron {
|
||||
|
||||
void SetFontDefaults(blink::web_pref::WebPreferences* prefs) {
|
||||
static auto const cache = MakeCache();
|
||||
|
||||
for (FamilyCache const& row : cache) {
|
||||
FillFontFamilyMap(row.fonts, prefs->*row.map_offset);
|
||||
}
|
||||
static const auto copy_default_fonts_to_web_prefs = MakeDefaultFontCopier();
|
||||
copy_default_fonts_to_web_prefs(prefs);
|
||||
}
|
||||
|
||||
} // namespace electron
|
||||
|
|
|
|||
Loading…
Reference in a new issue