parse

1 files changed, 56 insertions, 0 deletions

diff --git a/src/parse.cc b/src/parse.cc
new file mode 100644
index 0000000..abb80d9
--- /dev/null
+++ b/src/parse.cc
@@ -0,0 +1,56 @@
+#include "parse.h"
+
+namespace ov4
+{
+
+int parseline(const char *cmdline, char **argv) 
+{
+    static char array[MAXLINE]; /* holds local copy of command line */
+    char *buf = array;          /* ptr that traverses command line */
+    char *delim;                /* points to first space delimiter */
+    int argc;                   /* number of args */
+    int bg;                     /* background job? */
+
+    strcpy(buf, cmdline);
+    buf[strlen(buf)-1] = ' ';  /* replace trailing '\n' with space */
+    while (*buf && (*buf == ' ')) /* ignore leading spaces */
+	buf++;
+
+    /* Build the argv list */
+    argc = 0;
+    if (*buf == '\'') {
+	buf++;
+	delim = strchr(buf, '\'');
+    }
+    else {
+	delim = strchr(buf, ' ');
+    }
+
+    while (delim) {
+	argv[argc++] = buf;
+	*delim = '\0';
+	buf = delim + 1;
+	while (*buf && (*buf == ' ')) /* ignore spaces */
+	       buf++;
+
+	if (*buf == '\'') {
+	    buf++;
+	    delim = strchr(buf, '\'');
+	}
+	else {
+	    delim = strchr(buf, ' ');
+	}
+    }
+    argv[argc] = NULL;
+    
+    if (argc == 0)  /* ignore blank line */
+	return 1;
+
+    /* should the job run in the background? */
+    if ((bg = (*argv[argc-1] == '&')) != 0) {
+	argv[--argc] = NULL;
+    }
+    return bg;
+}
+
+}