kc3-lang/linenoise/example.c

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• Hash : bbcf9bf2
  Author :
  Date : 2014-03-12T23:38:40
  

  Scan codes debugging functionality. ./linenoise_example --scancodes

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• example.c

• #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include "linenoise.h"
  
  
  void completion(const char *buf, linenoiseCompletions *lc) {
      if (buf[0] == 'h') {
          linenoiseAddCompletion(lc,"hello");
          linenoiseAddCompletion(lc,"hello there");
      }
  }
  
  int main(int argc, char **argv) {
      char *line;
      char *prgname = argv[0];
  
      /* Parse options, with --multiline we enable multi line editing. */
      while(argc > 1) {
          argc--;
          argv++;
          if (!strcmp(*argv,"--multiline")) {
              linenoiseSetMultiLine(1);
              printf("Multi-line mode enabled.\n");
          } else if (!strcmp(*argv,"--scancodes")) {
              linenoisePrintScanCodes();
              exit(0);
          } else {
              fprintf(stderr, "Usage: %s [--multiline] [--scancodes]\n", prgname);
              exit(1);
          }
      }
  
      /* Set the completion callback. This will be called every time the
       * user uses the <tab> key. */
      linenoiseSetCompletionCallback(completion);
  
      /* Load history from file. The history file is just a plain text file
       * where entries are separated by newlines. */
      linenoiseHistoryLoad("history.txt"); /* Load the history at startup */
  
      /* Now this is the main loop of the typical linenoise-based application.
       * The call to linenoise() will block as long as the user types something
       * and presses enter.
       *
       * The typed string is returned as a malloc() allocated string by
       * linenoise, so the user needs to free() it. */
      while((line = linenoise("hello> ")) != NULL) {
          /* Do something with the string. */
          if (line[0] != '\0' && line[0] != '/') {
              printf("echo: '%s'\n", line);
              linenoiseHistoryAdd(line); /* Add to the history. */
              linenoiseHistorySave("history.txt"); /* Save the history on disk. */
          } else if (!strncmp(line,"/historylen",11)) {
              /* The "/historylen" command will change the history len. */
              int len = atoi(line+11);
              linenoiseHistorySetMaxLen(len);
          } else if (line[0] == '/') {
              printf("Unreconized command: %s\n", line);
          }
          free(line);
      }
      return 0;
  }
  

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