Add checks to Python scripts for version dependencies.

diff --git a/alias.c b/alias.c
index ccb1108c94436035d0da8b1d6f08f859b68294a3..eb9f08b912b2089d434926fc6083ac5ab90c73bc 100644 (file)
--- a/alias.c
+++ b/alias.c
@@ -22,12 +22,19 @@ char *alias_lookup(const char *alias)
        return alias_val;
 }
 
+#define SPLIT_CMDLINE_BAD_ENDING 1
+#define SPLIT_CMDLINE_UNCLOSED_QUOTE 2
+static const char *split_cmdline_errors[] = {
+       "cmdline ends with \\",
+       "unclosed quote"
+};
+
 int split_cmdline(char *cmdline, const char ***argv)
 {
        int src, dst, count = 0, size = 16;
        char quoted = 0;
 
-       *argv = xmalloc(sizeof(char*) * size);
+       *argv = xmalloc(sizeof(char *) * size);
 
        /* split alias_string */
        (*argv)[count++] = cmdline;
@@ -38,10 +45,7 @@ int split_cmdline(char *cmdline, const char ***argv)
                        while (cmdline[++src]
                                        && isspace(cmdline[src]))
                                ; /* skip */
-                       if (count >= size) {
-                               size += 16;
-                               *argv = xrealloc(*argv, sizeof(char*) * size);
-                       }
+                       ALLOC_GROW(*argv, count+1, size);
                        (*argv)[count++] = cmdline + dst;
                } else if (!quoted && (c == '\'' || c == '"')) {
                        quoted = c;
@@ -56,7 +60,7 @@ int split_cmdline(char *cmdline, const char ***argv)
                                if (!c) {
                                        free(*argv);
                                        *argv = NULL;
-                                       return error("cmdline ends with \\");
+                                       return -SPLIT_CMDLINE_BAD_ENDING;
                                }
                        }
                        cmdline[dst++] = c;
@@ -69,9 +73,15 @@ int split_cmdline(char *cmdline, const char ***argv)
        if (quoted) {
                free(*argv);
                *argv = NULL;
-               return error("unclosed quote");
+               return -SPLIT_CMDLINE_UNCLOSED_QUOTE;
        }
 
+       ALLOC_GROW(*argv, count+1, size);
+       (*argv)[count] = NULL;
+
        return count;
 }
 
+const char *split_cmdline_strerror(int split_cmdline_errno) {
+       return split_cmdline_errors[-split_cmdline_errno-1];
+}