Initial commit

1 files changed, 81 insertions, 0 deletions

diff --git a/strpbrk.c b/strpbrk.c
new file mode 100644
index 0000000..4d614d7
--- /dev/null
+++ b/strpbrk.c
@@ -0,0 +1,81 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+char **redir_chop(const char *line)
+{
+    if (!line)
+        return NULL;
+
+    const char *redir_delim = "><";
+
+    char *pipe_redir = strpbrk(line, redir_delim);
+    if (pipe_redir == NULL)
+        return NULL;
+
+    size_t redir_delta = pipe_redir - line;
+    char *former = (char *) malloc(sizeof(char) * 100);
+    char *latter = (char *) malloc(sizeof(char) * 100);
+
+    strncpy(former, line, redir_delta);
+    former[redir_delta] ='\0';
+
+    /* delete spaces at the end of former string */
+    int i = strlen(former) - 1;
+    while (former[i] == ' ')
+        former[i--] = '\0';
+
+    /* skip spaces in latter string and then copy over */
+    int j = redir_delta;
+    while (line[++j] == ' ')
+        ;
+    strncpy(latter, line+j, (line + strlen(line)) - pipe_redir);
+
+    char **ret = (char **) malloc(sizeof(char *) * 2);
+    ret[0] = (char *) former;
+    ret[1] = (char *) latter;
+
+    return ret;
+}
+
+int main(int argc, char *argv[])
+{
+    const char *line = "ls -1 -al > filename.txt";
+
+#if 0
+    const char *redir_delim = "><";
+
+    char *pipe_redir = strpbrk(line, redir_delim);
+    size_t redir_delta = pipe_redir - line;
+    char *former = (char *) malloc(sizeof(char) * 100);
+    char *latter = (char *) malloc(sizeof(char) * 100);
+
+    strncpy(former, line, redir_delta);
+    former[redir_delta] ='\0';
+
+    /* delete spaces at the end of former string */
+    int i = strlen(former) - 1;
+    while (former[i] == ' ')
+        former[i--] = '\0';
+
+    /* skip spaces in latter string and then copy over */
+    int j = redir_delta;
+    while (line[++j] == ' ')
+        ;
+    strncpy(latter, line+j, (line + strlen(line)) - pipe_redir);
+
+    printf("former string: \"%s\"\n", former);
+    printf("latter string: \"%s\"\n", latter);
+
+    free(former);
+    free(latter);
+#endif
+
+    char **chopped = redir_chop(line);
+ 
+    printf("former string: \"%s\"\n", chopped[0]);
+    printf("latter string: \"%s\"\n", chopped[1]);   
+    
+    return 0;
+}
+