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win32 readline support, maybe.

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This commit is contained in:
Kelvin Sherlock 2019-02-11 18:11:45 -05:00
parent 0021956044
commit 4a0c190ce3
1 changed files with 69 additions and 39 deletions
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108
src/readline.c
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@ -1,9 +1,25 @@
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#define HISTORY_SIZE 64
/* remove trailing whitespace and terminators */
static void cleanup_buffer(char *buffer, int size) {
while (size > 0) {
unsigned c = buffer[size-1];
if (c == ' ' || c == '\r' || c == '\n') {
--size;
continue;
}
break;
}
buffer[size] = 0;
}
#if defined(USE_LIBEDIT)
#include <histedit.h>
@ -21,12 +37,12 @@ static char *prompt_fn(EditLine *el) {
char *x_readline(const char *prompt) {
static char buffer[1024];
int ok = 0;
int count = 0;
const char *cp;
if (!el) {
hist = history_init();
history(hist, &ev, H_SETSIZE, 50);
history(hist, &ev, H_SETSIZE, HISTORY_SIZE);
history(hist, &ev, H_SETUNIQUE, 1);
el = el_init("GS+", stdin, stdout, stderr);
@ -39,22 +55,14 @@ char *x_readline(const char *prompt) {
}
el_prompt = prompt;
cp = el_gets(el, &ok);
cp = el_gets(el, &count);
el_prompt = NULL;
if (ok <= 0) return NULL;
if (ok > sizeof(buffer) - 1) return "";
if (count <= 0) return NULL;
if (count > sizeof(buffer) - 1) return "";
memcpy(buffer, cp, ok);
while (ok) {
unsigned c = buffer[ok-1];
if (c == ' ' || c == '\r' || c == '\n') {
--ok;
continue;
}
break;
}
buffer[ok] = 0;
memcpy(buffer, cp, count);
cleanup_buffer(buffer, count);
if (*buffer)
history(hist, &ev, H_ENTER, buffer);
@ -88,35 +96,27 @@ char *x_readline(const char *prompt) {
static char buffer[1024];
char *cp;
int ok;
int count;
if (!readline_init) {
rl_readline_name = "GS+";
rl_attempted_completion_function = rl_acf;
using_history();
stifle_history(50);
stifle_history(HISTORY_SIZE);
readline_init = 1;
}
cp = readline(prompt);
if (!cp) return NULL;
ok = strlen(cp);
if (ok > sizeof(buffer) - 1) {
count = strlen(cp);
if (count > sizeof(buffer) - 1) {
free(cp);
return "";
}
memcpy(buffer, cp, ok);
while (ok) {
unsigned c = buffer[ok-1];
if (c == ' ' || c == '\r' || c == '\n') {
--ok;
continue;
}
break;
}
buffer[ok] = 0;
memcpy(buffer, cp, count);
cleanup_buffer(buffer, count);
free(cp);
/* append to history, but only if unique from prev. entry */
@ -130,8 +130,46 @@ char *x_readline(const char *prompt) {
void x_readline_end(void) {
}
#elif defined(WIN32)
#include <windows.h>
static int readline_init = 0;
char *x_readline(const char *prompt) {
static char buffer[1024];
DWORD count = 0;
BOOL ok;
HANDLE h = GetStdHandle(STD_INPUT_HANDLE),
if (!readline_init) {
CONSOLE_HISTORY_INFO chi;
DWORD mode;
memset(&chi, 0, sizeof(chi));
chi.cbSize = sizeof(CONSOLE_HISTORY_INFO);
chi.HistoryBufferSize = HISTORY_SIZE;
chi.NumberOfHistoryBuffers = 1; /* ???? */
chi.dwFlags = HISTORY_NO_DUP_FLAG;
SetConsoleHistoryInfo(&chi);
mode = ENABLE_ECHO_INPUT | ENABLE_EXTENDED_FLAGS | ENABLE_INSERT_MODE | ENABLE_LINE_INPUT | ENABLE_PROCESSED_INPUT | ENABLE_QUICK_EDIT_MODE;
SetConsoleMode(h, mode);
readline_init = 1;
}
ok = ReadConsole(h, buffer, sizeof(buffer), &count, NULL);
if (!ok) return NULL;
cleanup_buffer(buffer, count);
return buffer;
}
#else
#include <unistd.h>
char *x_readline(const char *prompt) {
static char buffer[1024];
fputs(prompt, stdout);
@ -144,15 +182,7 @@ char *x_readline(const char *prompt) {
return NULL;
}
if (ok == 0) return NULL;
while (ok) {
unsigned c = buffer[ok-1];
if (c == ' ' || c == '\r' || c == '\n') {
--ok;
continue;
}
break;
}
buffer[ok] = 0;
cleanup_buffer(buffer, ok);
return buffer;
}