[patch] python.eselect.patch

python.eselect.patch (text/plain), 3.61 KB, created by Arfrever Frehtes Taifersar Arahesis (RETIRED) on 2009-08-03 22:18:52 UTC

Index: python.eselect
===================================================================
--- python.eselect	(revision 189)
+++ python.eselect	(working copy)
@@ -24,23 +24,60 @@ find_targets() {
 	done
 }
 
-set_python_script() {
-	local script="${INTERPRETER_PATH}${1}" target="${2}"
-	cat << EOF > "${script}"
-#!/bin/bash
-# Gentoo Python wrapper script
+set_python() {
+	local program="${INTERPRETER_PATH}python" program_source target="${1}"
+	program_source="$(mktemp || die "mktemp failed")"
+	mv "${program_source}"{,.c}
+	program_source+=".c"
+	cat << EOF > "${program_source}"
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
 
-[[ "\${EPYTHON}" =~ (/|^python\$) ]] && EPYTHON="${target}"
-"\${0%/*}/\${EPYTHON:-${target}}" "\$@"
+const char* name = "### Gentoo Python wrapper for ${target} program ###";
+
+int main(int argc, char** argv)
+{
+  if (strlen(name) == 0)
+    {
+      abort();
+    }
+
+  char* EPYTHON = getenv("EPYTHON");
+  if (! EPYTHON || (strcmp(EPYTHON, "python") == 0) || strchr(EPYTHON, '/'))
+    {
+      EPYTHON = "${target}";
+    }
+
+  char buf[PATH_MAX + 1];
+  if (readlink("/proc/self/exe", buf, sizeof(buf) - 1) != -1)
+    {
+      char* last_path_sep = strrchr(buf, '/');
+      if (last_path_sep)
+        {
+          *last_path_sep = 0;
+        }
+      char* absolute_python_path = strcat(strcat(buf, "/"), EPYTHON);
+      execv(absolute_python_path, argv);
+    }
+  else
+    {
+      execvp(EPYTHON, argv);
+    }
+
+  return 1;
+}
 EOF
-	chmod +x "${script}"
+	${CC:-gcc} ${CFLAGS} ${LDFLAGS} "${program_source}" -o "${program}"
+	rm -f "${program_source}"
 }
 
-set_python_config_script() {
-	local script="${INTERPRETER_PATH}${1}" target="${2}"
+set_python_config() {
+	local script="${INTERPRETER_PATH}python-config" target="${1}"
 	cat << EOF > "${script}"
 #!/bin/bash
-# Gentoo python-config wrapper script
+# Gentoo Python wrapper for ${target} script
 
 [[ "\${EPYTHON}" =~ (/|^python\$) ]] && EPYTHON="${target/-config-/}"
 python_config="\${EPYTHON/python/python-config-}"
@@ -100,11 +137,11 @@ set_scripts_and_symlinks() {
 	if [[ -f "${INTERPRETER_PATH}${target}" ]]; then
 		remove_symlinks
 		set_man_symlink "${target}"
-	
+
 		pushd "${INTERPRETER_PATH}" 1>/dev/null
-		set_python_script "python" "${target}"
+		set_python "${target}"
 		ln -nfs "${target}" "${target%.*}"
-		set_python_config_script "python-config" "${target/python/python-config-}"
+		set_python_config "${target/python/python-config-}"
 		ln -nfs "${target/python/pydoc}" pydoc
 		ln -nfs "${target/python/idle}" idle
 		# 2to3 for >=2.6
@@ -138,8 +175,9 @@ describe_show() {
 }
 
 do_show() {
-	active=$(canonicalise "${INTERPRETER_PATH}python")
-	echo ${active#${INTERPRETER_PATH}}
+	active=$(< "${INTERPRETER_PATH}python")
+	active=$(echo "${active}" | grep -Eo "### Gentoo Python wrapper for [^[:space:]]+ program ###" | sed -e "s/.*### Gentoo Python wrapper for \([^[:space:]]\+\) program ###.*/\1/")
+	echo "${active}"
 }
 
 ### list action ###
@@ -178,6 +216,13 @@ do_set() {
 	elif [[ -n "${2}" ]]; then
 		die -q "Too many parameters"
 	else
+		if [[ -z "${CFLAGS}" && -f /etc/make.conf ]]; then
+			CFLAGS="$(. /etc/make.conf; echo "${CFLAGS}")"
+		fi
+		if [[ -z "${LDFLAGS}" && -f /etc/make.conf ]]; then
+			LDFLAGS="$(. /etc/make.conf; echo "${LDFLAGS}")"
+		fi
+
 		if ! remove_symlinks; then
 			die -q "Can't remove existing provider"
 		elif ! set_scripts_and_symlinks "${1}"; then
@@ -220,7 +265,7 @@ do_update() {
 	fi
 
 	local targets=( $(cd "${INTERPRETER_PATH}"; ls python?.?|sort -r) ) target
-	
+
 	# Ignore slots
 	for slot in ${ignored_slots[@]}; do
 		targets=( ${targets[@]/python${slot}/} )