Convert to CMake, fix terminal resize behaviour
Fucking terminals, always broken in one way or another. For future reference, libedit acts even worse than readline.
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56
CMakeLists.txt
Normal file
56
CMakeLists.txt
Normal file
@ -0,0 +1,56 @@
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project (json-rpc-shell C)
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cmake_minimum_required (VERSION 2.8.5)
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# Moar warnings
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if ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUC)
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set (CMAKE_C_FLAGS "-std=c99")
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set (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wall -Wextra")
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endif ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUC)
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# Version
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set (project_VERSION_MAJOR "0")
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set (project_VERSION_MINOR "1")
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set (project_VERSION_PATCH "0")
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set (project_VERSION "${project_VERSION_MAJOR}")
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set (project_VERSION "${project_VERSION}.${project_VERSION_MINOR}")
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set (project_VERSION "${project_VERSION}.${project_VERSION_PATCH}")
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# For custom modules
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set (CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
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# Dependencies
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find_package (PkgConfig REQUIRED)
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pkg_check_modules (dependencies REQUIRED libcurl jansson)
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find_package (LibEV REQUIRED)
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include_directories (${dependencies_INCLUDE_DIRS} ${LIBEV_INCLUDE_DIRS})
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# Build the main executable and link it
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add_executable (${PROJECT_NAME} ${PROJECT_NAME}.c)
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target_link_libraries (${PROJECT_NAME}
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${dependencies_LIBRARIES} ${LIBEV_LIBRARIES} readline)
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# The files to be installed
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include (GNUInstallDirs)
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install (TARGETS ${PROJECT_NAME} DESTINATION ${CMAKE_INSTALL_BINDIR})
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install (FILES LICENSE DESTINATION ${CMAKE_INSTALL_DOCDIR})
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# CPack
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set (CPACK_PACKAGE_DESCRIPTION_SUMMARY "Shell for JSON-RPC 2.0 HTTP queries")
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set (CPACK_PACKAGE_VENDOR "Premysl Janouch")
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set (CPACK_PACKAGE_CONTACT "Přemysl Janouch <p.janouch@gmail.com>")
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set (CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE")
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set (CPACK_PACKAGE_VERSION_MAJOR ${project_VERSION_MAJOR})
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set (CPACK_PACKAGE_VERSION_MINOR ${project_VERSION_MINOR})
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set (CPACK_PACKAGE_VERSION_PATCH ${project_VERSION_PATCH})
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set (CPACK_GENERATOR "TGZ;ZIP")
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set (CPACK_PACKAGE_FILE_NAME
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"${PROJECT_NAME}-${project_VERSION}-${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")
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set (CPACK_PACKAGE_INSTALL_DIRECTORY "${PROJECT_NAME}-${project_VERSION}")
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set (CPACK_SOURCE_GENERATOR "TGZ;ZIP")
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set (CPACK_SOURCE_IGNORE_FILES "/\\\\.git;/build;/CMakeLists.txt.user")
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set (CPACK_SOURCE_PACKAGE_FILE_NAME "${PROJECT_NAME}-${project_VERSION}")
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include (CPack)
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19
Makefile
19
Makefile
@ -1,19 +0,0 @@
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SHELL = /bin/sh
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CC = clang
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# -Wunused-function is pretty annoying here, as everything is static
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CFLAGS = -std=c99 -Wall -Wextra -Wno-unused-function -ggdb
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# -lpthread is only there for debugging (gdb & errno)
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LDFLAGS = `pkg-config --libs libcurl jansson` -lpthread -lreadline
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.PHONY: all clean
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.SUFFIXES:
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targets = json-rpc-shell
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all: $(targets)
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clean:
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rm -f $(targets)
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json-rpc-shell: json-rpc-shell.c
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$(CC) $< -o $@ $(CFLAGS) $(LDFLAGS)
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11
README
11
README
@ -10,15 +10,16 @@ Fuck Java. With a sharp, pointy object. In the ass. Hard. json-c as well.
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Building and Running
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--------------------
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Build dependencies: clang, pkg-config, GNU make, Jansson, cURL, readline
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If you don't have Clang, you can edit the Makefile to use GCC or TCC, they work
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just as good. But there's no CMake support yet, so I force it in the Makefile.
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Build dependencies: CMake, pkg-config, libev, Jansson, cURL, readline
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$ git clone https://github.com/pjanouch/json-rpc-shell.git
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$ mkdir build
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$ cd build
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$ cmake .. -DCMAKE_BUILD_TYPE=Debug
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$ make
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That is all, no installation is required, or supported for that matter.
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Now you can run the following command to get some help about the exact usage:
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$ ./json-rpc-shell --help
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License
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-------
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18
cmake/FindLibEV.cmake
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18
cmake/FindLibEV.cmake
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# Public Domain
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# The author of libev is a dick and doesn't want to add support for pkg-config,
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# forcing us to include this pointless file in the distribution.
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# Some distributions do add it, though
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find_package (PkgConfig REQUIRED)
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pkg_check_modules (LIBEV QUIET libev)
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if (NOT LIBEV_FOUND)
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find_path (LIBEV_INCLUDE_DIRS ev.h)
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find_library (LIBEV_LIBRARIES NAMES ev)
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if (LIBEV_INCLUDE_DIRS AND LIBEV_LIBRARIES)
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set (LIBEV_FOUND TRUE)
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endif (LIBEV_INCLUDE_DIRS AND LIBEV_LIBRARIES)
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endif (NOT LIBEV_FOUND)
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121
json-rpc-shell.c
121
json-rpc-shell.c
@ -40,7 +40,10 @@
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#include <iconv.h>
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#include <langinfo.h>
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#include <sys/stat.h>
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#include <signal.h>
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#include <unistd.h>
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#include <ev.h>
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#include <getopt.h>
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#include <readline/readline.h>
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#include <readline/history.h>
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@ -144,18 +147,6 @@ str_append_data (struct str *self, const char *data, size_t n)
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self->str[self->len] = '\0';
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}
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static void
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str_append_c (struct str *self, char c)
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{
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str_append_data (self, &c, 1);
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}
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static void
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str_append (struct str *self, const char *s)
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{
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str_append_data (self, s, strlen (s));
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}
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// --- Utilities ---------------------------------------------------------------
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static char *strdup_printf (const char *format, ...) ATTRIBUTE_PRINTF (1, 2);
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@ -242,7 +233,7 @@ mkdir_with_parents (char *path)
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// --- Main program ------------------------------------------------------------
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struct app_context
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static struct app_context
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{
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CURL *curl; ///< cURL handle
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char curl_error[CURL_ERROR_SIZE]; ///< cURL error info buffer
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@ -256,7 +247,8 @@ struct app_context
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iconv_t term_to_utf8; ///< Terminal encoding to UTF-8
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iconv_t term_from_utf8; ///< UTF-8 to terminal encoding
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};
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}
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g_ctx;
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#define PARSE_FAIL(...) \
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BLOCK_START \
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@ -569,6 +561,47 @@ fail:
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free (input);
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}
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static void
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on_winch (EV_P_ ev_signal *handle, int revents)
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{
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(void) loop;
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(void) handle;
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(void) revents;
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// This fucks up big time on terminals with automatic wrapping such as
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// rxvt-unicode or newer VTE when the current line overflows, however we
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// can't do much about that
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rl_resize_terminal ();
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}
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static void
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on_readline_input (char *line)
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{
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if (!line)
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{
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rl_callback_handler_remove ();
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ev_break (EV_DEFAULT_ EVBREAK_ONE);
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return;
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}
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if (*line)
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add_history (line);
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// Stupid readline forces us to use a global variable
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process_input (&g_ctx, line);
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free (line);
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}
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static void
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on_tty_readable (EV_P_ ev_io *handle, int revents)
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{
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(void) loop;
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(void) handle;
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if (revents & EV_READ)
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rl_callback_read_char ();
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}
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static void
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print_usage (const char *program_name)
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{
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@ -591,9 +624,6 @@ main (int argc, char *argv[])
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{
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const char *invocation_name = argv[0];
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struct app_context ctx;
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memset (&ctx, 0, sizeof ctx);
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static struct option opts[] =
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{
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{ "help", no_argument, NULL, 'h' },
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@ -624,11 +654,11 @@ main (int argc, char *argv[])
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printf (PROGRAM_NAME " " PROGRAM_VERSION "\n");
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exit (EXIT_SUCCESS);
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case 'a': ctx.auto_id = true; break;
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case 'o': origin = optarg; break;
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case 'p': ctx.pretty_print = true; break;
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case 't': ctx.trust_all = true; break;
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case 'v': ctx.verbose = true; break;
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case 'a': g_ctx.auto_id = true; break;
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case 'o': origin = optarg; break;
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case 'p': g_ctx.pretty_print = true; break;
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case 't': g_ctx.trust_all = true; break;
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case 'v': g_ctx.verbose = true; break;
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default:
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print_error ("wrong options");
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@ -652,7 +682,7 @@ main (int argc, char *argv[])
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" either `http://' or `https://'");
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CURL *curl;
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if (!(ctx.curl = curl = curl_easy_init ()))
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if (!(g_ctx.curl = curl = curl_easy_init ()))
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exit_fatal ("cURL initialization failed");
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struct curl_slist *headers = NULL;
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@ -666,10 +696,12 @@ main (int argc, char *argv[])
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if (curl_easy_setopt (curl, CURLOPT_POST, 1L)
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|| curl_easy_setopt (curl, CURLOPT_NOPROGRESS, 1L)
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|| curl_easy_setopt (curl, CURLOPT_ERRORBUFFER, ctx.curl_error)
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|| curl_easy_setopt (curl, CURLOPT_ERRORBUFFER, g_ctx.curl_error)
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|| curl_easy_setopt (curl, CURLOPT_HTTPHEADER, headers)
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|| curl_easy_setopt (curl, CURLOPT_SSL_VERIFYPEER, ctx.trust_all ? 0L : 1L)
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|| curl_easy_setopt (curl, CURLOPT_SSL_VERIFYHOST, ctx.trust_all ? 0L : 2L)
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|| curl_easy_setopt (curl, CURLOPT_SSL_VERIFYPEER,
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g_ctx.trust_all ? 0L : 1L)
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|| curl_easy_setopt (curl, CURLOPT_SSL_VERIFYHOST,
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g_ctx.trust_all ? 0L : 2L)
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|| curl_easy_setopt (curl, CURLOPT_URL, endpoint))
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exit_fatal ("cURL setup failed");
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@ -683,9 +715,9 @@ main (int argc, char *argv[])
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encoding = strdup_printf ("%s//TRANSLIT", encoding);
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#endif // __linux__
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if ((ctx.term_from_utf8 = iconv_open (encoding, "utf-8"))
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if ((g_ctx.term_from_utf8 = iconv_open (encoding, "utf-8"))
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== (iconv_t) -1
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|| (ctx.term_to_utf8 = iconv_open ("utf-8", nl_langinfo (CODESET)))
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|| (g_ctx.term_to_utf8 = iconv_open ("utf-8", nl_langinfo (CODESET)))
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== (iconv_t) -1)
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exit_fatal ("creating the UTF-8 conversion object failed: %s",
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strerror (errno));
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@ -711,17 +743,30 @@ main (int argc, char *argv[])
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RL_PROMPT_START_IGNORE, RL_PROMPT_END_IGNORE,
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RL_PROMPT_START_IGNORE, RL_PROMPT_END_IGNORE);
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char *line;
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while ((line = readline (prompt)))
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{
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if (*line)
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add_history (line);
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// readline 6.3 doesn't immediately redraw the terminal upon reception
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// of SIGWINCH, so we must run it in an event loop to remediate that
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struct ev_loop *loop = EV_DEFAULT;
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if (!loop)
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exit_fatal ("libev initialization failed");
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process_input (&ctx, line);
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free (line);
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}
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ev_signal winch_watcher;
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ev_io tty_watcher;
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ev_signal_init (&winch_watcher, on_winch, SIGWINCH);
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ev_signal_start (EV_DEFAULT_ &winch_watcher);
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ev_io_init (&tty_watcher, on_tty_readable, STDIN_FILENO, EV_READ);
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ev_io_start (EV_DEFAULT_ &tty_watcher);
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rl_catch_sigwinch = false;
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rl_callback_handler_install (prompt, on_readline_input);
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ev_run (loop, 0);
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putchar ('\n');
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ev_loop_destroy (loop);
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// User has terminated the program, let's save the history and clean up
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char *dir = strdup (history_path);
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(void) mkdir_with_parents (dirname (dir));
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free (dir);
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@ -731,8 +776,8 @@ main (int argc, char *argv[])
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history_path, strerror (errno));
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free (history_path);
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iconv_close (ctx.term_from_utf8);
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iconv_close (ctx.term_to_utf8);
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iconv_close (g_ctx.term_from_utf8);
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iconv_close (g_ctx.term_to_utf8);
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curl_slist_free_all (headers);
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free (origin);
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curl_easy_cleanup (curl);
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