| 1 | /* sim_readline.c: libreadline wrapper |
| 2 | |
| 3 | Written by Philipp Hachtmann |
| 4 | |
| 5 | |
| 6 | 01-OCT-08 PH Include stdio.h |
| 7 | 19-SEP-08 PH Initial version |
| 8 | |
| 9 | |
| 10 | */ |
| 11 | |
| 12 | #ifdef HAVE_READLINE |
| 13 | |
| 14 | #include <stdio.h> |
| 15 | #include <readline/readline.h> |
| 16 | #include <readline/history.h> |
| 17 | #include "sim_defs.h" |
| 18 | |
| 19 | #ifdef READLINE_SAVED_HISTORY |
| 20 | |
| 21 | #include <stdlib.h> |
| 22 | #include <string.h> |
| 23 | #include <ctype.h> |
| 24 | |
| 25 | #define HISTORYFILE ".simh_history" |
| 26 | |
| 27 | /* Simulator name */ |
| 28 | extern char sim_name[]; |
| 29 | |
| 30 | static char historyfile[240]; |
| 31 | |
| 32 | #endif |
| 33 | |
| 34 | void readline_read_history(){ |
| 35 | |
| 36 | #ifdef READLINE_SAVED_HISTORY |
| 37 | |
| 38 | char filename[40]; |
| 39 | int c; |
| 40 | |
| 41 | #endif |
| 42 | |
| 43 | using_history(); |
| 44 | |
| 45 | #ifdef READLINE_SAVED_HISTORY |
| 46 | |
| 47 | /* Generate lower case file name like ".nova_history" */ |
| 48 | strcpy(filename,"."); |
| 49 | strncat (filename,sim_name,30); |
| 50 | filename[39]=0; |
| 51 | for (c=0;c<strlen(filename);c++) |
| 52 | filename[c]=tolower(filename[c]); |
| 53 | strcat(filename,"_history"); |
| 54 | |
| 55 | char * tmp=getenv("HOME"); |
| 56 | historyfile[0]=historyfile[200]=0; |
| 57 | |
| 58 | if (tmp!=NULL){ |
| 59 | strncat(historyfile,tmp,100); |
| 60 | strcat(historyfile,"/"); |
| 61 | } |
| 62 | |
| 63 | strcat(historyfile,filename); |
| 64 | |
| 65 | read_history(historyfile); |
| 66 | |
| 67 | #endif |
| 68 | |
| 69 | } |
| 70 | |
| 71 | void readline_write_history(){ |
| 72 | #ifdef READLINE_SAVED_HISTORY |
| 73 | write_history(historyfile); |
| 74 | #endif |
| 75 | } |
| 76 | |
| 77 | /* |
| 78 | readline_read_line read line |
| 79 | |
| 80 | Inputs: |
| 81 | cptr = pointer to buffer |
| 82 | size = maximum size |
| 83 | prompt = prompt string to use |
| 84 | Outputs: |
| 85 | optr = pointer to first non-blank character |
| 86 | NULL if EOF |
| 87 | */ |
| 88 | |
| 89 | char *readline_read_line(char *cpre, int32 size, const char * prompt){ |
| 90 | |
| 91 | char * templine, *result; |
| 92 | |
| 93 | templine=readline(prompt); |
| 94 | |
| 95 | /* Action for EOF */ |
| 96 | if (templine==NULL) return NULL; |
| 97 | |
| 98 | /* For security reasons */ |
| 99 | cpre[size-1]=0; |
| 100 | |
| 101 | /* Copy the line data to the buffer */ |
| 102 | strncpy(cpre,templine,size-1); |
| 103 | |
| 104 | /* Free the temporary buffer allocated by readline() */ |
| 105 | free(templine); |
| 106 | |
| 107 | result=cpre; |
| 108 | |
| 109 | |
| 110 | /* Add current line to history - And don't add repetitions! */ |
| 111 | if ((strlen(cpre))&&(strncmp("quit",cpre,strlen(cpre))!=0)){ |
| 112 | if (current_history()){ |
| 113 | if (strcmp(cpre,current_history()->line)!=0) |
| 114 | add_history(cpre); |
| 115 | } else { |
| 116 | add_history(cpre); |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | /* Skip spaces and TAB characters */ |
| 121 | while ((*result==' ')||(*result=='\t')) result++; |
| 122 | |
| 123 | /* We're finished here */ |
| 124 | return result; |
| 125 | } |
| 126 | |
| 127 | |
| 128 | #endif |