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Add bolt11 parser and Invoice View

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Changelog-Added: Display bolt11 invoice widgets on posts
This commit is contained in:
William Casarin
2022-10-19 07:46:05 -07:00
parent dbe1260b54
commit c6ab1de639
15 changed files with 411 additions and 41 deletions
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70
damus-c/damus.c
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@@ -6,6 +6,7 @@
//
#include "damus.h"
#include "bolt11.h"
#include <stdlib.h>
#include <string.h>
@@ -194,11 +195,60 @@ static int parse_url(struct cursor *cur, struct block *block) {
return 1;
}
static int parse_invoice(struct cursor *cur, struct block *block) {
const u8 *start, *end;
char *fail;
struct bolt11 *bolt11;
start = cur->p;
if (!parse_str(cur, "lnbc"))
return 0;
if (!consume_until_whitespace(cur, 1)) {
cur->p = start;
return 0;
}
end = cur->p;
char str[end - start + 1];
str[end - start] = 0;
memcpy(str, start, end - start);
if (!(bolt11 = bolt11_decode(NULL, str, &fail))) {
cur->p = start;
return 0;
}
block->type = BLOCK_INVOICE;
block->block.invoice.invstr.start = (const char*)start;
block->block.invoice.invstr.end = (const char*)end;
block->block.invoice.bolt11 = bolt11;
cur->p += end - start;
return 1;
}
static int add_text_then_block(struct cursor *cur, struct blocks *blocks, struct block block, u8 **start, u8 *pre_mention)
{
if (!add_text_block(blocks, *start, pre_mention))
return 0;
*start = (u8*)cur->p;
if (!add_block(blocks, block))
return 0;
return 1;
}
int damus_parse_content(struct blocks *blocks, const char *content) {
int cp, c;
struct cursor cur;
struct block block;
const u8 *start, *pre_mention;
u8 *start, *pre_mention;
blocks->num_blocks = 0;
make_cursor(&cur, (const u8*)content, strlen(content));
@@ -211,24 +261,16 @@ int damus_parse_content(struct blocks *blocks, const char *content) {
pre_mention = cur.p;
if (cp == -1 || is_whitespace(cp)) {
if (c == '#' && (parse_mention(&cur, &block) || parse_hashtag(&cur, &block))) {
if (!add_text_block(blocks, start, pre_mention))
if (!add_text_then_block(&cur, blocks, block, &start, pre_mention))
return 0;
start = cur.p;
if (!add_block(blocks, block))
return 0;
continue;
} else if (c == 'h' && parse_url(&cur, &block)) {
if (!add_text_block(blocks, start, pre_mention))
if (!add_text_then_block(&cur, blocks, block, &start, pre_mention))
return 0;
start = cur.p;
if (!add_block(blocks, block))
continue;
} else if (c == 'l' && parse_invoice(&cur, &block)) {
if (!add_text_then_block(&cur, blocks, block, &start, pre_mention))
return 0;
continue;
}
}