plugins/fts/fts-parser-html.c

/* Copyright (c) 2011-2018 Dovecot authors, see the included COPYING file */

#include "lib.h"
#include "buffer.h"
#include "message-parser.h"
#include "mail-html2text.h"
#include "fts-parser.h"

struct html_fts_parser {
    struct fts_parser parser;
    struct mail_html2text *html2text;
    buffer_t *output;
};

static struct fts_parser *
fts_parser_html_try_init(struct fts_parser_context *parser_context)
{
    struct html_fts_parser *parser;

    if (!mail_html2text_content_type_match(parser_context->content_type))
        return NULL;

    parser = i_new(struct html_fts_parser, 1);
    parser->parser.v = fts_parser_html;
    parser->html2text = mail_html2text_init(0);
    parser->output = buffer_create_dynamic(default_pool, 4096);
    return &parser->parser;
}

static void fts_parser_html_more(struct fts_parser *_parser,
                 struct message_block *block)
{
    struct html_fts_parser *parser = (struct html_fts_parser *)_parser;

    if (block->size == 0) {
        /* finished */
        return;
    }

    buffer_set_used_size(parser->output, 0);
    mail_html2text_more(parser->html2text, block->data, block->size,
                parser->output);

    block->data = parser->output->data;
    block->size = parser->output->used;
}

static int fts_parser_html_deinit(struct fts_parser *_parser,
                  const char **retriable_err_msg_r ATTR_UNUSED)
{
    struct html_fts_parser *parser = (struct html_fts_parser *)_parser;

    mail_html2text_deinit(&parser->html2text);
    buffer_free(&parser->output);
    i_free(parser);
    return 1;
}

struct fts_parser_vfuncs fts_parser_html = {
    fts_parser_html_try_init,
    fts_parser_html_more,
    fts_parser_html_deinit,
    NULL
};