add history commands

[CleanReadLine.git] / Clean System Files / readLine.c

diff --git a/Clean System Files/readLine.c b/Clean System Files/readLine.c
index b39be2e..2855915 100644 (file)
--- a/Clean System Files/readLine.c
+++ b/Clean System Files/readLine.c
@@ -8,17 +8,61 @@
 
 static char *cs_answer = (char *)NULL;
 
-void cleanReadLine(CleanString prompt, int history, CleanString *result)
-{
-       //Initialize
-       unsigned long promptlen = CleanStringLength(prompt);
-       char *cs_prompt = (char *)malloc(promptlen+1);
-       if(cs_prompt == NULL){
+char *cleanStringToCString(CleanString s){
+       unsigned long len = CleanStringLength(s);
+       char *cs = (char *)malloc(len+1);
+       if(cs == NULL){
                printf("malloc failed...\n");
                exit(1);
        }
-       memcpy(cs_prompt, CleanStringCharacters(prompt), promptlen);
-       cs_prompt[promptlen] = '\0';
+       memcpy(cs, CleanStringCharacters(s), len);
+       cs[len] = '\0';
+       return cs;
+}
+
+int cleanReadHistory(CleanString path)
+{
+       char *cs_path = cleanStringToCString(path);
+       int errno = read_history(cs_path);
+       free(cs_path);
+       return errno;
+}
+
+int cleanReadHistoryRange(CleanString path, int from, int to)
+{
+       char *cs_path = cleanStringToCString(path);
+       int errno = read_history_range(cs_path, from, to);
+       free(cs_path);
+       return errno;
+}
+
+int cleanWriteHistory(CleanString path)
+{
+       char *cs_path = cleanStringToCString(path);
+       int errno = write_history(cs_path);
+       free(cs_path);
+       return errno;
+}
+
+int cleanAppendHistory(int n, CleanString path)
+{
+       char *cs_path = cleanStringToCString(path);
+       int errno = append_history(n, cs_path);
+       free(cs_path);
+       return errno;
+}
+
+int cleanHistoryTruncateFile(CleanString path, int nlines)
+{
+       char *cs_path = cleanStringToCString(path);
+       int errno = history_truncate_file(cs_path, nlines);
+       free(cs_path);
+       return errno;
+}
+
+void cleanReadLine(CleanString prompt, int history, CleanString *result)
+{
+       char *cs_prompt = cleanStringToCString(prompt);
 
        //Get the answer and add to history if not empty
        if(cs_answer){
@@ -31,9 +75,17 @@ void cleanReadLine(CleanString prompt, int history, CleanString *result)
                add_history(cs_answer);
        }
 
-       //Transfor answer into cstring
-       CleanStringVariable(answer, strlen(cs_answer));
-       *result = (CleanString) answer;
-       memcpy(CleanStringCharacters(answer), cs_answer, strlen(cs_answer));
-       CleanStringLength(answer) = strlen(cs_answer);
+       if(!cs_answer){
+               //Transfor answer into cstring
+               CleanStringVariable(answer, 1);
+               *result = (CleanString) answer;
+               memcpy(CleanStringCharacters(answer), "", 1);
+               CleanStringLength(answer) = 1;
+       } else {
+               //Transfor answer into cstring
+               CleanStringVariable(answer, strlen(cs_answer));
+               *result = (CleanString) answer;
+               memcpy(CleanStringCharacters(answer), cs_answer, strlen(cs_answer));
+               CleanStringLength(answer) = strlen(cs_answer);
+       }
 }