Add lemon/3.32.3 recipe (#2201)

* Add lemon/3.32.3 recipe

* lemon: gcc accepts int main(int argc, char *argv)...

* lemon: add patch to search for templates in bindir

* lemon: strip executable name from string

* lemon: check for error using GetLastError

* lemon: MAX_PATH is only known on Windows

* lemon: aliase build_type and compiler

* lemon: remove unused function

* lemon: avoid ci building debug packages

* lemon: only build test_package when not cross building

recipes/lemon/all/CMakeLists.txt

@@ -0,0 +1,9 @@
+cmake_minimum_required(VERSION 2.8.14)
+project(ConanLemon C)
+
+include(conanbuildinfo.cmake)
+conan_basic_setup()
+
+add_executable(lemon source_subfolder/tool/lemon.c)
+install(TARGETS lemon RUNTIME DESTINATION bin)
+install(FILES source_subfolder/tool/lempar.c DESTINATION bin)

recipes/lemon/all/conandata.yml

@@ -0,0 +1,8 @@
+sources:
+  "3.32.3":
+    "url": "https://sqlite.org/2020/sqlite-src-3320300.zip"
+    "sha256": "9312f0865d3692384d466048f746d18f88e7ffd1758b77d4f07904e03ed5f5b9"
+patches:
+  "3.32.3":
+    - patch_file: "patches/0001-use-executable-template-path.patch"
+      base_path: "source_subfolder"

recipes/lemon/all/conanfile.py

@@ -0,0 +1,58 @@
+import os
+from conans import CMake, ConanFile, tools
+
+
+class LemonConan(ConanFile):
+    name = "lemon"
+    description = "The Lemon program reads a grammar of the input language and emits C-code to implement a parser for that language."
+    url = "https://github.com/conan-io/conan-center-index"
+    homepage = "https://sqlite.org/lemon.html"
+    topics = ("conan", "lemon", "grammar", "lexer", "lalr", "parser", "generator", "sqlite")
+    license = "Public Domain"
+    exports_sources = "CMakeLists.txt", "patches/**"
+    settings = "os", "compiler", "arch", "build_type"
+    generators = "cmake"
+
+    @property
+    def _source_subfolder(self):
+        return "source_subfolder"
+
+    _cmake = None
+
+    def configure(self):
+        del self.settings.compiler.libcxx
+        del self.settings.compiler.cppstd
+
+    def source(self):
+        tools.get(**self.conan_data["sources"][self.version])
+        url = self.conan_data["sources"][self.version]["url"]
+        archive_name = os.path.basename(url)
+        archive_name = os.path.splitext(archive_name)[0]
+        os.rename(archive_name, self._source_subfolder)
+
+    def _configure_cmake(self):
+        if self._cmake:
+            return self._cmake
+        self._cmake = CMake(self)
+        self._cmake.configure()
+        return self._cmake
+
+    def build(self):
+        for patch in self.conan_data.get("patches", {}).get(self.version, []):
+            tools.patch(**patch)
+        cmake = self._configure_cmake()
+        cmake.build()
+
+    def _extract_license_text(self):
+        header = tools.load(os.path.join(self._source_subfolder, "tool", "lempar.c"))
+        return "\n".join(line.strip(" \n*") for line in header[3:header.find("*******", 1)].splitlines())
+
+    def package(self):
+        tools.save(os.path.join(self.package_folder, "licenses", "LICENSE"), self._extract_license_text())
+        cmake = self._configure_cmake()
+        cmake.install()
+
+    def package_info(self):
+        bin_path = os.path.join(self.package_folder, "bin")
+        self.output.info("Appending PATH environment variable: {}".format(bin_path))
+        self.env_info.PATH.append(bin_path)

recipes/lemon/all/patches/0001-use-executable-template-path.patch

@@ -0,0 +1,65 @@
+--- tool/lemon.c
++++ tool/lemon.c
+@@ -3502,11 +3502,53 @@
+   }
+ }
+
++#ifdef _WIN32
++# define WIN32_LEAN_AND_MEAN
++# include <windows.h>
++#else
++# include <libgen.h>
++# include <unistd.h>
++#endif
++#include <string.h>
++
++#define DEFAULT_PATH "."
++
++static char *get_default_template_path(const char *filename) {
++    static char static_path[8192];
++#ifdef _WIN32
++# define JOINER "\\"
++    SetLastError(ERROR_SUCCESS);
++    int result = GetModuleFileNameA(NULL, static_path, sizeof(static_path));
++    if (GetLastError() != ERROR_SUCCESS) {
++        memcpy(static_path, DEFAULT_PATH, strlen(DEFAULT_PATH));
++    }
++    char *pos = strrchr(static_path, '\\');
++    if (pos) {
++        *pos = '\0';
++    }
++#else
++# define JOINER "/"
++    ssize_t nb = readlink("/proc/self/exe", static_path, sizeof(static_path));
++    if (nb != -1) {
++        static_path[nb] = '\0';
++        dirname(static_path);
++    } else {
++        memcpy(static_path, DEFAULT_PATH, strlen(DEFAULT_PATH));
++    }
++#endif
++    if (sizeof(static_path) < (strlen(static_path) + sizeof(JOINER) + strlen(filename) + 1)) {
++        strcpy(static_path, DEFAULT_PATH);
++    }
++    strncat(static_path, JOINER, sizeof(JOINER));
++    strncat(static_path, filename, sizeof(filename));
++    return static_path;
++}
++
+ /* The next function finds the template file and opens it, returning
+ ** a pointer to the opened file. */
+ PRIVATE FILE *tplt_open(struct lemon *lemp)
+ {
+-  static char templatename[] = "lempar.c";
++  char *templatename;
+   char buf[1000];
+   FILE *in;
+   char *tpltname;
+@@ -3530,6 +3572,7 @@
+     return in;
+   }
+
++  templatename = get_default_template_path("lempar.c");
+   cp = strrchr(lemp->filename,'.');
+   if( cp ){
+     lemon_sprintf(buf,"%.*s.lt",(int)(cp-lemp->filename),lemp->filename);

recipes/lemon/all/test_package/CMakeLists.txt

@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 2.8.11)
+project(test_package)
+
+include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
+conan_basic_setup()
+
+add_custom_command(OUTPUT gram.c gram.h
+    COMMAND lemon -s "${PROJECT_SOURCE_DIR}/gram.y" -d"${PROJECT_BINARY_DIR}"
+    BYPRODUCTS gram.out
+)
+
+add_executable(${PROJECT_NAME} gram.c)
+target_link_libraries(${PROJECT_NAME} ${CONAN_LIBS})

recipes/lemon/all/test_package/conanfile.py

@@ -0,0 +1,18 @@
+from conans import ConanFile, CMake, tools
+import os
+
+
+class TestPackageConan(ConanFile):
+    settings = "os", "compiler", "build_type", "arch"
+    generators = "cmake"
+
+    def build(self):
+        if not tools.cross_building(self.settings):
+            cmake = CMake(self)
+            cmake.configure()
+            cmake.build()
+
+    def test(self):
+        if not tools.cross_building(self.settings):
+            bin_path = os.path.join("bin", "test_package")
+            self.run(bin_path, run_environment=True)

recipes/lemon/all/test_package/gram.y

@@ -0,0 +1,71 @@
+%include {
+#include <math.h>
+#include <stdio.h>
+}
+
+%extra_argument {double *res}
+%token_type {double}
+
+res ::= expr(B).                    { *res = B; }
+expr(A) ::= expr(B) PLUS expr(C).   { A = B + C; }
+expr(A) ::= expr(B) MINUS expr(C).  { A = B - C; }
+expr(A) ::= expr(B) TIMES expr(C).  { A = B * C; }
+expr(A) ::= expr(B) DIVIDE expr(C). { A = B / C;}
+expr(A) ::= expr(B) MOD expr(C).    { A = modf(B, &C); }
+expr(A) ::= LPAREN expr(B) RPAREN.  { A = B; }
+expr(A) ::= VALUE(B).               { A = B; }
+expr(A) ::= MINUS expr(B). [UMINUS] { A = -B; }
+
+%left PLUS MINUS.
+%left TIMES DIVIDE MOD.
+%right UMINUS.
+
+%code {
+
+#include "gram.h"
+
+typedef struct {
+    int id;
+    double val;
+} input_item_t;
+
+static input_item_t test_input[] = {
+    {VALUE, 1.},
+    {PLUS, 0.},
+    {VALUE, 2.},
+    {PLUS, 0.},
+    {VALUE, 3.},
+    {TIMES, 0.},
+    {VALUE, 4.},
+    {TIMES, 0.},
+    {VALUE, 5.},
+    {TIMES, 0.},
+    {LPAREN, 0.},
+    {VALUE, 6.},
+    {MINUS, 0.},
+    {VALUE, 7.},
+    {RPAREN, 0.},
+    {0., 0.},
+};
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, const char *argv[]) {
+    void *pParser = ParseAlloc(malloc);
+    double result = -123456.;
+    double val;
+    input_item_t *input = test_input;
+    while (1) {
+        Parse(pParser, input->id, input->val, &result);
+        if (input->id == 0) {
+            break;
+        }
+        ++input;
+    }
+    ParseFree(pParser, free);
+    printf("Result is %g.\n", result);
+    return 0;
+}
+
+}

recipes/lemon/config.yml

@@ -0,0 +1,3 @@
+"versions":
+  "3.32.3":
+    "folder": "all"