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Handle completion of symbols with a prefix... 

You can type stuff and then tab and it will work.  Before it would try
to complete the whole line, which didn't work.
This commit is contained in:
Simon Forman 2023-02-20 15:48:59 -08:00
parent 2d3c17c152
commit c0b582567a
1 changed files with 37 additions and 4 deletions
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41
implementations/C/try_rax.c
View File

@ -1,6 +1,7 @@
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include "linenoise.h"
#include "rax.h"
@ -11,19 +12,51 @@ rax *rt;
#define INSERT(key) raxInsert(rt, (unsigned char*)(key), sizeof((key)), NULL, NULL);
int
index_of_last_symbol_char(const char *buf)
{
int n = strlen(buf);
while (n) {
if (strchr(" []", buf[n - 1])) {
break;
}
n--;
}
return n;
}
void
completion(const char *buf, linenoiseCompletions *lc)
{
int n = strnlen(buf, 1024);
char *prefix;
int n = index_of_last_symbol_char(buf);
int buffer_length = strlen(buf);
if (n) {
prefix = malloc(1024); /* Just assume 1k is enough for now... TODO: fix! */
if (prefix == NULL) return;
memcpy(prefix, buf, n);
buf += n;
buffer_length -= n;
}
raxIterator iter;
raxStart(&iter, rt);
raxSeek(&iter, ">=", (unsigned char*)buf, n);
raxSeek(&iter, ">=", (unsigned char*)buf, buffer_length);
while(raxNext(&iter)) {
if (strncmp((const char *)iter.key, buf, n))
if (strncmp((const char *)iter.key, buf, buffer_length))
break;
linenoiseAddCompletion(lc, (const char *)iter.key);
if (n) {
prefix[n] = 0;
strlcat(prefix + n, (const char *)iter.key, 1024 - n);
linenoiseAddCompletion(lc, (const char *)prefix);
} else {
linenoiseAddCompletion(lc, (const char *)iter.key);
}
}
raxStop(&iter);
if (n) {
free(prefix);
}
}