1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
#include <errno.h>
#include <string.h>
#include "jim.h"
#include "jimautoconf.h"
#ifdef USE_LINENOISE
#include <unistd.h>
#include "linenoise.h"
#else
#define MAX_LINE_LEN 512
static char *linenoise(const char *prompt)
{
char *line = malloc(MAX_LINE_LEN);
fputs(prompt, stdout);
fflush(stdout);
if (fgets(line, MAX_LINE_LEN, stdin) == NULL) {
free(line);
return NULL;
}
return line;
}
#endif
int Jim_InteractivePrompt(Jim_Interp *interp)
{
int retcode = JIM_OK;
char *history_file = NULL;
#ifdef USE_LINENOISE
const char *home;
home = getenv("HOME");
if (home && isatty(STDIN_FILENO)) {
int history_len = strlen(home) + sizeof("/.jim_history");
history_file = Jim_Alloc(history_len);
snprintf(history_file, history_len, "%s/.jim_history", home);
linenoiseHistoryLoad(history_file);
}
#endif
printf("Welcome to Jim version %d.%d" JIM_NL,
JIM_VERSION / 100, JIM_VERSION % 100);
Jim_SetVariableStrWithStr(interp, JIM_INTERACTIVE, "1");
while (1) {
Jim_Obj *scriptObjPtr;
const char *result;
int reslen;
char prompt[20];
const char *str;
if (retcode != 0) {
const char *retcodestr = Jim_ReturnCode(retcode);
if (*retcodestr == '?') {
snprintf(prompt, sizeof(prompt) - 3, "[%d] ", retcode);
}
else {
snprintf(prompt, sizeof(prompt) - 3, "[%s] ", retcodestr);
}
}
else {
prompt[0] = '\0';
}
strcat(prompt, ". ");
scriptObjPtr = Jim_NewStringObj(interp, "", 0);
Jim_IncrRefCount(scriptObjPtr);
while (1) {
char state;
int len;
char *line;
line = linenoise(prompt);
if (line == NULL) {
if (errno == EINTR) {
continue;
}
Jim_DecrRefCount(interp, scriptObjPtr);
goto out;
}
if (Jim_Length(scriptObjPtr) != 0) {
Jim_AppendString(interp, scriptObjPtr, "\n", 1);
}
Jim_AppendString(interp, scriptObjPtr, line, -1);
free(line);
str = Jim_GetString(scriptObjPtr, &len);
if (len == 0) {
continue;
}
if (Jim_ScriptIsComplete(str, len, &state))
break;
snprintf(prompt, sizeof(prompt), "%c> ", state);
}
#ifdef USE_LINENOISE
if (strcmp(str, "h") == 0) {
/* built-in history command */
int i;
int len;
char **history = linenoiseHistory(&len);
for (i = 0; i < len; i++) {
printf("%4d %s\n", i + 1, history[i]);
}
Jim_DecrRefCount(interp, scriptObjPtr);
continue;
}
linenoiseHistoryAdd(Jim_String(scriptObjPtr));
if (history_file) {
linenoiseHistorySave(history_file);
}
#endif
retcode = Jim_EvalObj(interp, scriptObjPtr);
Jim_DecrRefCount(interp, scriptObjPtr);
if (retcode == JIM_EXIT) {
Jim_Free(history_file);
return JIM_EXIT;
}
if (retcode == JIM_ERR) {
Jim_MakeErrorMessage(interp);
}
result = Jim_GetString(Jim_GetResult(interp), &reslen);
if (reslen) {
printf("%s\n", result);
}
}
out:
Jim_Free(history_file);
return JIM_OK;
}
|
