1#include <stdio.h> 2#include <stdlib.h> 3#include <string.h> 4#include "linenoise.h" 5 6 7void completion(const char *buf, linenoiseCompletions *lc) { 8 if (buf[0] == 'h') { 9 linenoiseAddCompletion(lc,"hello"); 10 linenoiseAddCompletion(lc,"hello there"); 11 } 12} 13 14char *hints(const char *buf, int *color, int *bold) { 15 if (!strcasecmp(buf,"hello")) { 16 *color = 35; 17 *bold = 0; 18 return " World"; 19 } 20 return NULL; 21} 22 23int main(int argc, char **argv) { 24 char *line; 25 char *prgname = argv[0]; 26 27 /* Parse options, with --multiline we enable multi line editing. */ 28 while(argc > 1) { 29 argc--; 30 argv++; 31 if (!strcmp(*argv,"--multiline")) { 32 linenoiseSetMultiLine(1); 33 printf("Multi-line mode enabled.\n"); 34 } else if (!strcmp(*argv,"--keycodes")) { 35 linenoisePrintKeyCodes(); 36 exit(0); 37 } else { 38 fprintf(stderr, "Usage: %s [--multiline] [--keycodes]\n", prgname); 39 exit(1); 40 } 41 } 42 43 /* Set the completion callback. This will be called every time the 44 * user uses the <tab> key. */ 45 linenoiseSetCompletionCallback(completion); 46 linenoiseSetHintsCallback(hints); 47 48 /* Load history from file. The history file is just a plain text file 49 * where entries are separated by newlines. */ 50 linenoiseHistoryLoad("history.txt"); /* Load the history at startup */ 51 52 /* Now this is the main loop of the typical linenoise-based application. 53 * The call to linenoise() will block as long as the user types something 54 * and presses enter. 55 * 56 * The typed string is returned as a malloc() allocated string by 57 * linenoise, so the user needs to free() it. */ 58 while((line = linenoise("hello> ")) != NULL) { 59 /* Do something with the string. */ 60 if (line[0] != '\0' && line[0] != '/') { 61 printf("echo: '%s'\n", line); 62 linenoiseHistoryAdd(line); /* Add to the history. */ 63 linenoiseHistorySave("history.txt"); /* Save the history on disk. */ 64 } else if (!strncmp(line,"/historylen",11)) { 65 /* The "/historylen" command will change the history len. */ 66 int len = atoi(line+11); 67 linenoiseHistorySetMaxLen(len); 68 } else if (line[0] == '/') { 69 printf("Unreconized command: %s\n", line); 70 } 71 free(line); 72 } 73 return 0; 74} 75