Clean System Files/readLine.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3
   4 #include <readline/readline.h>
   5 #include <readline/history.h>
   6
   7 #include "Clean.h"
   8
   9 static char *cs_answer = (char *)NULL;
  10
  11 char *cleanStringToCString(CleanString s){
  12         unsigned long len = CleanStringLength(s);
  13         char *cs = (char *)malloc(len+1);
  14         if(cs == NULL){
  15                 printf("malloc failed...\n");
  16                 exit(1);
  17         }
  18         memcpy(cs, CleanStringCharacters(s), len);
  19         cs[len] = '\0';
  20         return cs;
  21 }
  22
  23 void cleanReadLine(CleanString prompt, int history, CleanString *result)
  24 {
  25         char *cs_prompt = cleanStringToCString(prompt);
  26
  27         //Get the answer and add to history if not empty
  28         if(cs_answer){
  29                 free(cs_answer);
  30                 cs_answer = (char *)NULL;
  31         }
  32         cs_answer = readline(cs_prompt);
  33         free(cs_prompt);
  34         if(cs_answer && *cs_answer && history){
  35                 add_history(cs_answer);
  36         }
  37
  38         if(!cs_answer){ //In case of an EOF
  39                 CleanStringVariable(answer, 1);
  40                 *result = (CleanString) answer;
  41                 memcpy(CleanStringCharacters(answer), "", 1);
  42                 CleanStringLength(answer) = 1;
  43         } else { //In case of a proper response
  44                 CleanStringVariable(answer, strlen(cs_answer));
  45                 *result = (CleanString) answer;
  46                 memcpy(CleanStringCharacters(answer), cs_answer, strlen(cs_answer));
  47                 CleanStringLength(answer) = strlen(cs_answer);
  48         }
  49 }
  50
  51 void cleanSetReadLineName(CleanString name){
  52         rl_readline_name = cleanStringToCString(name);
  53 }
  54
  55 void cleanUsingHistory(){
  56         using_history();
  57 }
  58
  59 void cleanGetState(int *offset, int *num, int *flags){
  60         *offset = history_get_history_state()->offset;
  61         *num = history_get_history_state()->length;
  62         *flags = history_get_history_state()->flags;
  63 }
  64
  65 void cleanGetHistoryItem(int num, CleanString *line, CleanString *timestamp){
  66         ;
  67         char *cs_line = history_get_history_state()->entries[num]->line;
  68         char *cs_stamp = history_get_history_state()->entries[num]->timestamp;
  69
  70         CleanStringVariable(cleanLine, strlen(cs_line));
  71         *line = (CleanString) cleanLine;
  72         memcpy(CleanStringCharacters(cleanLine), cs_line, strlen(cs_line));
  73         CleanStringLength(cleanLine) = strlen(cs_line);
  74
  75         CleanStringVariable(cleanTimestamp, strlen(cs_stamp));
  76         *timestamp = (CleanString) cleanTimestamp;
  77         memcpy(CleanStringCharacters(cleanTimestamp), cs_stamp, strlen(cs_stamp));
  78         CleanStringLength(cleanTimestamp) = strlen(cs_stamp);
  79 }
  80
  81 void cleanAddHistory(CleanString entry){
  82         char *cs_entry = cleanStringToCString(entry);
  83         add_history(cs_entry);
  84         free(cs_entry);
  85 }
  86
  87 void cleanClearHistory(){
  88         clear_history();
  89 }
  90
  91 int cleanHistorySearch(CleanString s, int dir){
  92         char *cs_s = cleanStringToCString(s);
  93         int ret = history_search(cs_s, dir);
  94         free(cs_s);
  95         return ret;
  96 }
  97
  98 int cleanHistorySearchPrefix(CleanString s, int dir){
  99         char *cs_s = cleanStringToCString(s);
 100         int ret = history_search_prefix(cs_s, dir);
 101         free(cs_s);
 102         return ret;
 103 }
 104
 105 int cleanHistorySearchPos(CleanString s, int dir, int pos){
 106         char *cs_s = cleanStringToCString(s);
 107         int ret = history_search_pos(cs_s, dir, pos);
 108         free(cs_s);
 109         return ret;
 110 }
 111
 112 int cleanReadHistory(CleanString path)
 113 {
 114         char *cs_path = cleanStringToCString(path);
 115         int errno = read_history(cs_path);
 116         free(cs_path);
 117         return errno;
 118 }
 119
 120 int cleanReadHistoryRange(CleanString path, int from, int to)
 121 {
 122         char *cs_path = cleanStringToCString(path);
 123         int errno = read_history_range(cs_path, from, to);
 124         free(cs_path);
 125         return errno;
 126 }
 127
 128 int cleanWriteHistory(CleanString path)
 129 {
 130         char *cs_path = cleanStringToCString(path);
 131         int errno = write_history(cs_path);
 132         free(cs_path);
 133         return errno;
 134 }
 135
 136 int cleanAppendHistory(int n, CleanString path)
 137 {
 138         char *cs_path = cleanStringToCString(path);
 139         int errno = append_history(n, cs_path);
 140         free(cs_path);
 141         return errno;
 142 }
 143
 144 int cleanHistoryTruncateFile(CleanString path, int nlines)
 145 {
 146         char *cs_path = cleanStringToCString(path);
 147         int errno = history_truncate_file(cs_path, nlines);
 148         free(cs_path);
 149         return errno;
 150 }
 151