Bump liberty and termo

Lua detection functions used to cause fatal errors on failure to read.

We could also reconsider treating detection errors as fatal.

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.0)
+cmake_minimum_required (VERSION 3.0...3.27)
 project (hex VERSION 0.1.0 LANGUAGES C)
 
 # Moar warnings
@@ -20,7 +20,6 @@ include (AddThreads)
 find_package (Termo QUIET NO_MODULE)
 option (USE_SYSTEM_TERMO
 	"Don't compile our own termo library, use the system one" ${Termo_FOUND})
-
 if (USE_SYSTEM_TERMO)
 	if (NOT Termo_FOUND)
 		message (FATAL_ERROR "System termo library not found")
@@ -41,11 +40,10 @@ else ()
 endif ()
 
 set (project_libraries ${Unistring_LIBRARIES}
-	${Ncursesw_LIBRARIES} termo-static)
+	${Ncursesw_LIBRARIES} ${Termo_LIBRARIES})
 
-pkg_search_module (lua lua53 lua5.3 lua-5.3 lua>=5.3)
+pkg_search_module (lua lua53 lua5.3 lua-5.3 lua54 lua5.4 lua-5.4 lua>=5.3)
 option (WITH_LUA "Enable support for Lua plugins" ${lua_FOUND})
-
 if (WITH_LUA)
 	if (NOT lua_FOUND)
 		message (FATAL_ERROR "Lua library not found")
@@ -54,28 +52,37 @@ if (WITH_LUA)
 	list (APPEND project_libraries ${lua_LIBRARIES})
 	include_directories (${lua_INCLUDE_DIRS})
 	link_directories (${lua_LIBRARY_DIRS})
-
-	include (CheckTypeSize)
-	set (CMAKE_REQUIRED_LIBRARIES ${lua_LIBRARIES})
-	set (CMAKE_REQUIRED_INCLUDES ${lua_INCLUDE_DIRS})
-	set (CMAKE_EXTRA_INCLUDE_FILES "lua.h")
-	CHECK_TYPE_SIZE (lua_Integer LUA_INTEGER)
-	if (NOT HAVE_LUA_INTEGER OR LUA_INTEGER LESS 8)
-		message (FATAL_ERROR "Lua must have at least 64-bit integers")
 endif ()
+
+pkg_check_modules (x11 x11 xrender xft fontconfig libpng)
+option (WITH_X11 "Build with X11 support" ${x11_FOUND})
+if (WITH_X11)
+	if (NOT x11_FOUND)
+		message (FATAL_ERROR "Some X11 libraries were not found")
+	endif ()
+
+	list (APPEND project_libraries ${x11_LIBRARIES})
+	include_directories (${x11_INCLUDE_DIRS})
+	link_directories (${x11_LIBRARY_DIRS})
 endif ()
 
 include_directories (${Unistring_INCLUDE_DIRS}
 	${Ncursesw_INCLUDE_DIRS} ${Termo_INCLUDE_DIRS})
 
 # Configuration
+if ("${CMAKE_SYSTEM_NAME}" MATCHES "BSD")
+	# Need this for SIGWINCH in FreeBSD and OpenBSD respectively;
+	# our POSIX version macros make it undefined
+	add_definitions (-D__BSD_VISIBLE=1 -D_BSD_SOURCE=1)
+elseif (APPLE)
+	add_definitions (-D_DARWIN_C_SOURCE)
+endif ()
+
 include (CheckFunctionExists)
 set (CMAKE_REQUIRED_LIBRARIES ${Ncursesw_LIBRARIES})
 CHECK_FUNCTION_EXISTS ("resizeterm" HAVE_RESIZETERM)
 
 # Generate a configuration file
-set (HAVE_LUA "${WITH_LUA}")
-
 configure_file (${PROJECT_SOURCE_DIR}/config.h.in
 	${PROJECT_BINARY_DIR}/config.h)
 include_directories (${PROJECT_SOURCE_DIR} ${PROJECT_BINARY_DIR})
@@ -89,6 +96,30 @@ add_threads (${PROJECT_NAME})
 include (GNUInstallDirs)
 install (TARGETS ${PROJECT_NAME} DESTINATION ${CMAKE_INSTALL_BINDIR})
 install (FILES LICENSE DESTINATION ${CMAKE_INSTALL_DOCDIR})
+if (WITH_LUA)
+	install (DIRECTORY plugins
+		DESTINATION ${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME})
+endif ()
+if (WITH_X11)
+	include (IconUtils)
+
+	set (icon_base ${PROJECT_BINARY_DIR}/icons)
+	set (icon_png_list)
+	foreach (icon_size 16 32 48)
+		icon_to_png (${PROJECT_NAME} ${PROJECT_SOURCE_DIR}/${PROJECT_NAME}.svg
+			${icon_size} ${icon_base} icon_png)
+		list (APPEND icon_png_list ${icon_png})
+	endforeach ()
+
+	add_custom_target (icons ALL DEPENDS ${icon_png_list})
+
+	install (FILES ${PROJECT_NAME}.svg
+		DESTINATION ${CMAKE_INSTALL_DATADIR}/icons/hicolor/scalable/apps)
+	install (DIRECTORY ${icon_base}
+		DESTINATION ${CMAKE_INSTALL_DATADIR})
+	install (FILES ${PROJECT_NAME}.desktop
+		DESTINATION ${CMAKE_INSTALL_DATADIR}/applications)
+endif ()
 
 # Generate documentation from text markup
 find_program (ASCIIDOCTOR_EXECUTABLE asciidoctor)
@@ -137,7 +168,7 @@ foreach (page ${project_MAN_PAGES})
 endforeach ()
 
 # CPack
-set (CPACK_PACKAGE_DESCRIPTION_SUMMARY "Hex viewer")
+set (CPACK_PACKAGE_DESCRIPTION_SUMMARY "Interpreting hex viewer")
 set (CPACK_PACKAGE_VENDOR "Premysl Eric Janouch")
 set (CPACK_PACKAGE_CONTACT "Přemysl Eric Janouch <p@janouch.name>")
 set (CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE")

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2016 - 2017, Přemysl Eric Janouch <p@janouch.name>
+Copyright (c) 2016 - 2024, Přemysl Eric Janouch <p@janouch.name>
 
 Permission to use, copy, modify, and/or distribute this software for any
 purpose with or without fee is hereby granted.

README.adoc

@@ -3,7 +3,7 @@ hex
 
 'hex' is yet another hex viewer.  It automatically interprets fields within
 files using a set of Lua scripts, colorizing them and showing descriptions on
-the side.
+the side.  It also runs equally well in the terminal, or as an X11 client.
 
 At the moment there aren't that many features and we only have a few decoders.
 
@@ -11,8 +11,10 @@ image::hex.png[align="center"]
 
 Packages
 --------
-Regular releases are sporadic.  git master should be stable enough.  You can get
+Regular releases are sporadic.  git master should be stable enough.
-a package with the latest development version from Archlinux's AUR.
+You can get a package with the latest development version using Arch Linux's
+https://aur.archlinux.org/packages/hex-git[AUR],
+or as a https://git.janouch.name/p/nixexprs[Nix derivation].
 
 Documentation
 -------------
@@ -21,9 +23,11 @@ The rest of this README will concern itself with externalities.
 
 Building and Running
 --------------------
-Build dependencies: CMake, pkg-config, awk, liberty (included),
+Build-only dependencies: CMake, pkg-config, awk, liberty (included),
- termo (included), asciidoctor or asciidoc (recommended but optional) +
+ termo (included), asciidoctor or asciidoc (recommended but optional),
-Runtime dependencies: ncursesw, libunistring, Lua >= 5.3 (for highlighting)
+ rsvg-convert (X11) +
+Runtime dependencies: ncursesw, libunistring, Lua >= 5.3 (for highlighting) +
+Optional runtime dependencies: x11 + xft + libpng (X11)
 
  $ git clone --recursive https://git.janouch.name/p/hex.git
  $ mkdir hex/build

config.h.in

@@ -5,7 +5,8 @@
 #define PROGRAM_VERSION "${PROJECT_VERSION}"
 
 #cmakedefine HAVE_RESIZETERM
-#cmakedefine HAVE_LUA
+#cmakedefine WITH_LUA
+#cmakedefine WITH_X11
 
 #endif  // ! CONFIG_H
 

hex.adoc

@@ -38,6 +38,10 @@ _G_=1024M, and _GB_=1000M.  The default value is 1G.
 *-d*, *--debug*::
 	Run in debug mode.
 
+*-x*, *--x11*::
+	Use an X11 interface even when run from a terminal.
+	Note that the application may be built with this feature disabled.
+
 *-h*, *--help*::
 	Display a help message and exit.
 

hex.desktop

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Type=Application
+Name=hex
+GenericName=Interpreting hex viewer
+Icon=hex
+Exec=hex %f
+NoDisplay=true
+StartupNotify=false
+Categories=Utility;

hex.svg

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg version="1.0" width="48" height="48" viewBox="0 0 48 48"
+   xmlns="http://www.w3.org/2000/svg">
+  <g transform="translate(24 24) scale(2 2)">
+    <path d="M 0 0 -10 0 -10 -10 0 -10 Z" stroke-width="0" fill="#c6ffd6" />
+    <path d="M 0 0  10 0  10 -10 0 -10 Z" stroke-width="0" fill="#ffd8d8" />
+    <path d="M 0 0 -10 0 -10  10 0  10 Z" stroke-width="0" fill="#d8d8ff" />
+    <path d="M 0 0  10 0  10  10 0  10 Z" stroke-width="0" fill="#ffffac" />
+  </g>
+</svg>

plugins/elf.lua

@@ -18,7 +18,7 @@
 -- See man 5 elf, /usr/include/elf.h and /usr/include/llvm/Support/ELF.h
 
 local detect = function (c)
-	return c:read (4) == "\x7FELF"
+	return #c >= 4 and c:read (4) == "\x7FELF"
 end
 
 local ph_type_table = {
@@ -63,7 +63,7 @@ local decode_ph = function (elf, c)
 	ph.vaddr = elf.uwide (c, "virtual address: %#x")
 	ph.paddr = elf.uwide (c, "physical address: %#x")
 	ph.filesz = elf.uwide (c, "size in file: %d")
-	ph.memsz = elf.uwide (c, "sise in memory: %d")
+	ph.memsz = elf.uwide (c, "size in memory: %d")
 	if elf.class == 1 then ph.flags = c:u32 ("flags: %s", xform_ph_flags) end
 	ph.align = elf.uwide (c, "alignment: %d")
 	return ph

plugins/gzip.lua

@@ -16,7 +16,7 @@
 --
 
 local detect = function (c)
-	return c:read (2) == "\x1f\x8b"
+	return #c >= 2 and c:read (2) == "\x1f\x8b"
 end
 
 local function latin1_to_utf8 (s)

plugins/pcap.lua

@@ -16,11 +16,17 @@
 --
 
 local detect = function (c)
+	if #c < 4 then
+		return false
+	end
 	local magic = c:u32 ()
 	return magic == 0xa1b2c3d4 or magic == 0xd4c3b2a1
 end
 
 local detect_ng = function (c)
+	if #c < 8 then
+		return false
+	end
 	local magic = c (9):u32 ()
 	return c:u32 () == 0x0a0d0d0a
 		and (magic == 0x1a2b3c4d or magic == 0x4d3c2b1a)

plugins/pdf.lua

@@ -335,7 +335,7 @@ end
 -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 
 local detect = function (c)
-	return c:read (5) == "%PDF-"
+	return #c >= 5 and c:read (5) == "%PDF-"
 end
 
 local decode_xref_subsection = function (lex, start, count, result)

plugins/vdi.lua

@@ -16,6 +16,9 @@
 --
 
 local detect = function (c)
+	if #c < 68 then
+		return false
+	end
 	c.position = 65
 	return c:read (4) == "\x7F\x10\xDA\xBE"
 end

plugins/xcursor.lua

@@ -16,7 +16,7 @@
 --
 
 local detect = function (c)
-	return c:read (4) == "Xcur"
+	return #c >= 4 and c:read (4) == "Xcur"
 end
 
 -- https://www.x.org/releases/current/doc/man/man3/Xcursor.3.xhtml