Changeset 0662451 in mainline for uspace/app/bdsh/input.c

Timestamp:

2011-08-19T14:44:49Z (13 years ago)

Author:

Martin Sucha <sucha14@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

5992e0e

Parents:

89660f2

Message:

Extend bdsh tokenizer to include more information

File:

• uspace/app/bdsh/input.c (modified) (7 diffs)

uspace/app/bdsh/input.c

@@ -67 +67 @@
 {
         char *cmd[WORD_MAX];
+        token_t tokens_space[WORD_MAX];
+        token_t *tokens = tokens_space;
         int rc = 0;
         tokenizer_t tok;
-        int i, pipe_count, processed_pipes;
-        int pipe_pos[2];
-        char **actual_cmd;
+        unsigned int i, pipe_count, processed_pipes;
+        unsigned int pipe_pos[2];
         char *redir_from = NULL;
         char *redir_to = NULL;
@@ -78 +79 @@
                 return CL_EFAIL;
 
-        rc = tok_init(&tok, usr->line, cmd, WORD_MAX);
+        rc = tok_init(&tok, usr->line, tokens, WORD_MAX);
         if (rc != EOK) {
                 goto finit;
         }
         
-        rc = tok_tokenize(&tok);
+        size_t tokens_length;
+        rc = tok_tokenize(&tok, &tokens_length);
         if (rc != EOK) {
                 goto finit;
+        }
+        
+        if (tokens_length > 0 && tokens[0].type == TOKTYPE_SPACE) {
+                tokens++;
+                tokens_length--;
+        }
+        
+        if (tokens_length > 0 && tokens[tokens_length-1].type == TOKTYPE_SPACE) {
+                tokens_length--;
         }
         
@@ -93 +104 @@
          * First find the pipes and check that there are no more
          */
-        int cmd_length = 0;
-        for (i = 0, pipe_count = 0; cmd[i] != NULL; i++, cmd_length++) {
-                if (cmd[i][0] == '|') {
+        for (i = 0, pipe_count = 0; i < tokens_length; i++) {
+                if (tokens[i].type == TOKTYPE_PIPE) {
                         if (pipe_count >= 2) {
                                 print_pipe_usage();
@@ -106 +116 @@
         }
         
-        actual_cmd = cmd;
+        unsigned int cmd_token_start = 0;
+        unsigned int cmd_token_end = tokens_length;
+        
         processed_pipes = 0;
         
         /* Check if the first part (from <file> |) is present */
-        if (pipe_count > 0 && pipe_pos[0] == 2 && str_cmp(cmd[0], "from") == 0) {
+        if (pipe_count > 0 && (pipe_pos[0] == 3 || pipe_pos[0] == 4) && str_cmp(tokens[0].text, "from") == 0) {
                 /* Ignore the first three tokens (from, file, pipe) and set from */
-                redir_from = cmd[1];
-                actual_cmd = cmd + 3;
+                redir_from = tokens[2].text;
+                cmd_token_start = pipe_pos[0]+1;
+                printf("set cmd_token_start = %d\n", cmd_token_start);
                 processed_pipes++;
         }
@@ -119 +132 @@
         /* Check if the second part (| to <file>) is present */
         if ((pipe_count - processed_pipes) > 0 &&
-            pipe_pos[processed_pipes] == cmd_length - 3 &&
-            str_cmp(cmd[cmd_length-2], "to") == 0) {
+            (pipe_pos[processed_pipes] == tokens_length - 4 ||
+            (pipe_pos[processed_pipes] == tokens_length - 5 &&
+            tokens[tokens_length-4].type == TOKTYPE_SPACE )) &&
+            str_cmp(tokens[tokens_length-3].text, "to") == 0) {
                 /* Ignore the last three tokens (pipe, to, file) and set to */
-                redir_to = cmd[cmd_length-1];
-                cmd[cmd_length-3] = NULL;
-                cmd_length -= 3;
+                redir_to = tokens[tokens_length-1].text;
+                cmd_token_end = pipe_pos[processed_pipes];
+                printf("set cmd_token_end = %d\n", cmd_token_end);
                 processed_pipes++;
         }
@@ -134 +149 @@
         }
         
-        if (actual_cmd[0] == NULL) {
+        /* Convert tokens of the command to string array */
+        unsigned int cmd_pos = 0;
+        for (i = cmd_token_start; i < cmd_token_end; i++) {
+                if (tokens[i].type != TOKTYPE_SPACE) {
+                        cmd[cmd_pos++] = tokens[i].text;
+                        printf("%s\n", tokens[i].text);
+                }
+        }
+        cmd[cmd_pos++] = NULL;
+        
+        if (cmd[0] == NULL) {
                 print_pipe_usage();
                 rc = ENOTSUP;
@@ -170 +195 @@
         }
         
-        rc = run_command(actual_cmd, usr, &new_iostate);
+        rc = run_command(cmd, usr, &new_iostate);
         
 finit_with_files: