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https://bugzilla.redhat.com/show_bug.cgi?id=1372700
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Backported from scl-utils-2.0.
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--- scl-utils-20130529/scl.c.shebang
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+++ scl-utils-20130529/scl.c
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@@ -35,6 +35,74 @@
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#define SCL_CONF_DIR "/etc/scl/conf/"
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#define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
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+static int count_words(const char *str, char ch)
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+{
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+ int count = 0;
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+ bool inside_word = false;
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+
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+ while (*str != '\0') {
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+ if (*str != ch) {
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+ if (!inside_word) {
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+ count++;
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+ }
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+ inside_word = true;
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+ } else {
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+ inside_word = false;
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+ }
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+ str++;
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+ }
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+
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+ return count;
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+}
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+
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+/**
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+ * Procedure to parse shebang line and transform it to standard command
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+ *
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+ * In general, the shebang line has n parts at the beginnning:
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+ * argv[0] => the name of the utility stated in shebang
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+ * argv[1] => all the arguments as one string
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+ * argv[2] => the script which was executed
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+ * argv[n] => argument for executed script
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+ *
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+ * Considering the following shebang line in script ./test.py:
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+ * #!/usr/bin/scl enable collectionX
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+ * argv[0] = "/usr/bin/scl"
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+ * argv[1] = "enable collectionX"
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+ * argv[2] = "./test.py"
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+ * argv[n] = "argn"
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+ */
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+static void parse_shebang(int argc, char *argv[],
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+ int *_shebang_argc, char ***_shebang_argv) {
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+ int i = 0;
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+ char *p;
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+ int shebang_argc;
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+ char **shebang_argv;
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+
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+ shebang_argc = count_words(argv[1], ' ') + argc - 1;
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+ shebang_argv = (char **)malloc(sizeof(char *) * shebang_argc);
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+ if (shebang_argv == NULL) {
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+ fprintf(stderr, "Can't allocate memory.\n");
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+ exit(EXIT_FAILURE);
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+ }
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+
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+ shebang_argv[i++] = argv[0];
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+
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+ p = strtok(argv[1], " ");
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+ while (p != NULL) {
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+ shebang_argv[i++] = p;
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+ p = strtok(NULL, " ");
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+ }
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+
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+ while (i < shebang_argc) {
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+ shebang_argv[i] = argv[i - (shebang_argc - argc)];
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+ i++;
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+ }
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+
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+ *_shebang_argc = shebang_argc;
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+ *_shebang_argv = shebang_argv;
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+}
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+
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+
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static void check_asprintf( char **strp, const char *fmt, ... ) {
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va_list args;
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@@ -648,6 +716,17 @@
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}
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}
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+ if (argc >= 3 && strchr(argv[1], ' ') != NULL) {
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+ /* Apparently a shebang line */
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+ char **fake_argv = argv;
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+ int fake_argc = argc;
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+
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+ parse_shebang(argc, argv, &fake_argc, &fake_argv);
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+
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+ argc = fake_argc;
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+ argv = fake_argv;
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+ }
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+
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for (i = 0; i < argc; i++) {
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if (strcmp(argv[i], "--") == 0) {
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break;
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