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699 lines
21 KiB
C++
699 lines
21 KiB
C++
/**
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* Copyright (c) 2007-2012, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @file textview_curses.hh
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*/
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#ifndef __textview_curses_hh
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#define __textview_curses_hh
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#include <vector>
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#include "grep_proc.hh"
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#include "bookmarks.hh"
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#include "listview_curses.hh"
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#include "lnav_log.hh"
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#include "concise_index.hh"
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#include "logfile.hh"
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class logfile;
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class logline;
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class textview_curses;
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class logfile_filter_state {
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public:
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logfile_filter_state(logfile *lf = NULL) : tfs_logfile(lf) {
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memset(this->tfs_filter_count, 0, sizeof(this->tfs_filter_count));
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this->tfs_mask.reserve(64 * 1024);
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};
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void clear(void) {
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this->tfs_logfile = NULL;
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memset(this->tfs_filter_count, 0, sizeof(this->tfs_filter_count));
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this->tfs_mask.clear();
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};
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void resize(size_t newsize) {
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size_t old_mask_size = this->tfs_mask.size();
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this->tfs_mask.resize(newsize);
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if (newsize > old_mask_size) {
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memset(&this->tfs_mask[old_mask_size],
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0,
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sizeof(uint32_t) * (newsize - old_mask_size));
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}
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};
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const static int MAX_FILTERS = 32;
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logfile *tfs_logfile;
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size_t tfs_filter_count[MAX_FILTERS];
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std::vector<uint32_t> tfs_mask;
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std::vector<uint32_t> tfs_index;
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};
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class text_filter {
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public:
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typedef enum {
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MAYBE,
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INCLUDE,
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EXCLUDE,
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LFT__MAX,
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LFT__MASK = (MAYBE|INCLUDE|EXCLUDE)
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} type_t;
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text_filter(type_t type, const std::string id, size_t index)
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: lf_message_matched(false),
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lf_lines_for_message(0),
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lf_last_message_matched(false),
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lf_last_lines_for_message(0),
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lf_enabled(true),
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lf_type(type),
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lf_id(id),
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lf_index(index) { };
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virtual ~text_filter() { };
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type_t get_type(void) const { return this->lf_type; };
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std::string get_id(void) const { return this->lf_id; };
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size_t get_index(void) const { return this->lf_index; };
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bool is_enabled(void) { return this->lf_enabled; };
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void enable(void) { this->lf_enabled = true; };
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void disable(void) { this->lf_enabled = false; };
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void revert_to_last(logfile_filter_state &lfs) {
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this->lf_message_matched = this->lf_last_message_matched;
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this->lf_lines_for_message = this->lf_last_lines_for_message;
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for (size_t lpc = 0; lpc < this->lf_lines_for_message; lpc++) {
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lfs.tfs_filter_count[this->lf_index] -= 1;
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size_t line_number = lfs.tfs_filter_count[this->lf_index];
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lfs.tfs_mask[line_number] &= ~(((uint32_t) 1) << this->lf_index);
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}
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if (this->lf_lines_for_message > 0) {
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this->lf_lines_for_message -= 1;
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}
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if (this->lf_lines_for_message == 0) {
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this->lf_message_matched = false;
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}
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}
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void add_line(logfile_filter_state &lfs, const logfile::const_iterator ll, shared_buffer_ref &line);
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void end_of_message(logfile_filter_state &lfs) {
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uint32_t mask = 0;
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mask = ((uint32_t) this->lf_message_matched ? 1U : 0) << this->lf_index;
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for (size_t lpc = 0; lpc < this->lf_lines_for_message; lpc++) {
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size_t line_number = lfs.tfs_filter_count[this->lf_index];
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lfs.tfs_mask[line_number] |= mask;
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lfs.tfs_filter_count[this->lf_index] += 1;
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}
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this->lf_last_message_matched = this->lf_message_matched;
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this->lf_last_lines_for_message = this->lf_lines_for_message;
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this->lf_message_matched = false;
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this->lf_lines_for_message = 0;
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};
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virtual bool matches(const logfile &lf, const logline &ll, shared_buffer_ref &line) = 0;
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virtual std::string to_command(void) = 0;
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bool operator==(const std::string &rhs) {
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return this->lf_id == rhs;
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};
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bool lf_message_matched;
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size_t lf_lines_for_message;
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bool lf_last_message_matched;
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size_t lf_last_lines_for_message;
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protected:
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bool lf_enabled;
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type_t lf_type;
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std::string lf_id;
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size_t lf_index;
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};
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class filter_stack {
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public:
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typedef std::vector<text_filter *>::iterator iterator;
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iterator begin() {
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return this->fs_filters.begin();
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}
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iterator end() {
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return this->fs_filters.end();
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}
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size_t size() const {
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return this->fs_filters.size();
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}
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bool empty() const {
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return this->fs_filters.empty();
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};
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size_t next_index() {
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bool used[32];
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memset(used, 0, sizeof(used));
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for (iterator iter = this->begin(); iter != this->end(); ++iter) {
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size_t index = (*iter)->get_index();
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require(used[index] == false);
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used[index] = true;
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}
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for (size_t lpc = 0; lpc < logfile_filter_state::MAX_FILTERS; lpc++) {
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if (!used[lpc]) {
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return lpc;
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}
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}
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throw "No more filters";
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};
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void add_filter(text_filter *filter) {
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this->fs_filters.push_back(filter);
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};
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void clear_filters(void) {
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this->fs_filters.clear();
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};
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void set_filter_enabled(text_filter *filter, bool enabled) {
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if (enabled) {
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filter->enable();
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}
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else {
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filter->disable();
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}
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}
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text_filter *get_filter(std::string id)
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{
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std::vector<text_filter *>::iterator iter;
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text_filter * retval = NULL;
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for (iter = this->fs_filters.begin();
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iter != this->fs_filters.end() && (*iter)->get_id() != id;
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iter++) { }
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if (iter != this->fs_filters.end()) {
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retval = *iter;
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}
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return retval;
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};
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void get_enabled_mask(uint32_t &filter_in_mask, uint32_t &filter_out_mask) {
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filter_in_mask = filter_out_mask = 0;
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for (iterator iter = this->begin(); iter != this->end(); ++iter) {
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text_filter *tf = (*iter);
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if (tf->is_enabled()) {
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uint32_t bit = (1UL << tf->get_index());
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switch (tf->get_type()) {
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case text_filter::EXCLUDE:
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filter_out_mask |= bit;
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break;
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case text_filter::INCLUDE:
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filter_in_mask |= bit;
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break;
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default:
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ensure(0);
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break;
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}
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}
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}
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};
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private:
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std::vector<text_filter *> fs_filters;
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};
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/**
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* Source for the text to be shown in a textview_curses view.
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*/
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class text_sub_source {
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public:
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virtual ~text_sub_source() { };
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virtual void toggle_scrub(void) { };
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/**
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* @return The total number of lines available from the source.
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*/
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virtual size_t text_line_count() = 0;
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/**
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* Get the value for a line.
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*
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* @param tc The textview_curses object that is delegating control.
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* @param line The line number to retrieve.
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* @param value_out The string object that should be set to the line
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* contents.
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* @param raw Indicates that the raw contents of the line should be returned
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* without any post processing.
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*/
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virtual void text_value_for_line(textview_curses &tc,
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int line,
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std::string &value_out,
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bool raw = false) = 0;
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virtual size_t text_size_for_line(textview_curses &tc, int line, bool raw = false) = 0;
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/**
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* Inform the source that the given line has been marked/unmarked. This
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* callback function can be used to translate between between visible line
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* numbers and content line numbers. For example, when viewing a log file
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* with filters being applied, we want the bookmarked lines to be stable
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* across changes in the filters.
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*
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* @param bm The type of bookmark.
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* @param line The line that has been marked/unmarked.
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* @param added True if the line was bookmarked and false if it was
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* unmarked.
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*/
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virtual void text_mark(bookmark_type_t *bm, int line, bool added) {};
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/**
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* Clear the bookmarks for a particular type in the text source.
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*
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* @param bm The type of bookmarks to clear.
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*/
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virtual void text_clear_marks(bookmark_type_t *bm) {};
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/**
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* Get the attributes for a line of text.
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*
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* @param tc The textview_curses object that is delegating control.
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* @param line The line number to retrieve.
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* @param value_out A string_attrs_t object that should be updated with the
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* attributes for the line.
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*/
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virtual void text_attrs_for_line(textview_curses &tc,
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int line,
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string_attrs_t &value_out) {};
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/**
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* Update the bookmarks used by the text view based on the bookmarks
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* maintained by the text source.
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*
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* @param bm The bookmarks data structure used by the text view.
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*/
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virtual void text_update_marks(vis_bookmarks &bm) { };
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virtual std::string text_source_name(const textview_curses &tv) {
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return "";
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};
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filter_stack &get_filters() {
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return this->tss_filters;
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};
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virtual void text_filters_changed() {
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};
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virtual int get_filtered_count() const {
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return 0;
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};
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private:
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filter_stack tss_filters;
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};
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class text_delegate {
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public:
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virtual ~text_delegate() { };
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virtual void text_overlay(textview_curses &tc) { };
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virtual bool text_handle_mouse(textview_curses &tc, mouse_event &me) {
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return false;
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};
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};
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/**
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* The textview_curses class adds user bookmarks and searching to the standard
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* list view interface.
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*/
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class textview_curses
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: public listview_curses,
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public list_data_source,
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public grep_proc_source,
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public grep_proc_sink {
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public:
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typedef view_action<textview_curses> action;
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static bookmark_type_t BM_USER;
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static bookmark_type_t BM_PARTITION;
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static bookmark_type_t BM_SEARCH;
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static string_attr_type SA_BODY;
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struct highlighter {
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highlighter()
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: h_code(NULL),
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h_multiple(false) { };
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highlighter(pcre *code,
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bool multiple = false,
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view_colors::role_t role = view_colors::VCR_NONE)
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: h_code(code),
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h_multiple(multiple)
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{
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const char *errptr;
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if (!multiple) {
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if (role == view_colors::VCR_NONE) {
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this->h_roles.
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push_back(view_colors::singleton().next_highlight());
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}
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else {
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this->h_roles.push_back(role);
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}
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}
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this->h_code_extra = pcre_study(this->h_code, 0, &errptr);
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if (!this->h_code_extra && errptr) {
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log_error("pcre_study error: %s", errptr);
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}
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if (this->h_code_extra != NULL) {
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pcre_extra *extra = this->h_code_extra;
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extra->flags |= (PCRE_EXTRA_MATCH_LIMIT |
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PCRE_EXTRA_MATCH_LIMIT_RECURSION);
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extra->match_limit = 10000;
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extra->match_limit_recursion = 500;
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}
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};
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view_colors::role_t get_role(unsigned int index)
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{
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view_colors & vc = view_colors::singleton();
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view_colors::role_t retval;
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if (this->h_multiple) {
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while (index >= this->h_roles.size()) {
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this->h_roles.push_back(vc.next_highlight());
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}
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retval = this->h_roles[index];
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}
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else {
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retval = this->h_roles[0];
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}
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return retval;
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};
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int get_attrs(int index)
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{
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return view_colors::singleton().
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attrs_for_role(this->get_role(index));
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};
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pcre * h_code;
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pcre_extra * h_code_extra;
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bool h_multiple;
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std::vector<view_colors::role_t> h_roles;
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};
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textview_curses();
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virtual ~textview_curses();
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vis_bookmarks &get_bookmarks(void) { return this->tc_bookmarks; };
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void toggle_user_mark(bookmark_type_t *bm,
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vis_line_t start_line,
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vis_line_t end_line = vis_line_t(-1))
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{
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if (end_line == -1) {
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end_line = start_line;
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}
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if (start_line > end_line) {
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std::swap(start_line, end_line);
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}
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for (vis_line_t curr_line = start_line; curr_line <= end_line;
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++curr_line) {
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bookmark_vector<vis_line_t> &bv =
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this->tc_bookmarks[bm];
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bookmark_vector<vis_line_t>::iterator iter;
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bool added;
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iter = bv.insert_once(curr_line);
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if (iter == bv.end()) {
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added = true;
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}
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else {
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bv.erase(iter);
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added = false;
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}
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if (this->tc_sub_source != NULL) {
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this->tc_sub_source->text_mark(bm, (int)curr_line, added);
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}
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}
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};
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void set_user_mark(bookmark_type_t *bm, vis_line_t vl, bool marked) {
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bookmark_vector<vis_line_t> &bv = this->tc_bookmarks[bm];
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bookmark_vector<vis_line_t>::iterator iter;
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if (marked) {
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bv.insert_once(vl);
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}
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else {
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iter = std::lower_bound(bv.begin(), bv.end(), vl);
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if (iter != bv.end() && *iter == vl) {
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bv.erase(iter);
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}
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}
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if (this->tc_sub_source != NULL) {
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this->tc_sub_source->text_mark(bm, (int)vl, marked);
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}
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};
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void set_sub_source(text_sub_source *src)
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{
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this->tc_sub_source = src;
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this->reload_data();
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};
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text_sub_source *get_sub_source(void) const { return this->tc_sub_source; };
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void set_delegate(text_delegate *del) {
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this->tc_delegate = del;
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};
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text_delegate *get_delegate(void) const { return this->tc_delegate; };
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void horiz_shift(vis_line_t start, vis_line_t end,
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int off_start,
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std::string highlight_name,
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std::pair<int, int> &range_out)
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{
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highlighter &hl = this->tc_highlights[highlight_name];
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int prev_hit = -1, next_hit = INT_MAX;
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std::string str;
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for (; start < end; ++start) {
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int off;
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this->tc_sub_source->text_value_for_line(*this, start, str);
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for (off = 0; off < (int)str.size(); ) {
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int rc, matches[128];
|
|
|
|
rc = pcre_exec(hl.h_code,
|
|
hl.h_code_extra,
|
|
str.c_str(),
|
|
str.size(),
|
|
off,
|
|
0,
|
|
matches,
|
|
128);
|
|
if (rc > 0) {
|
|
struct line_range lr;
|
|
|
|
if (rc == 2) {
|
|
lr.lr_start = matches[2];
|
|
lr.lr_end = matches[3];
|
|
}
|
|
else {
|
|
lr.lr_start = matches[0];
|
|
lr.lr_end = matches[1];
|
|
}
|
|
|
|
if (lr.lr_start < off_start) {
|
|
prev_hit = std::max(prev_hit, lr.lr_start);
|
|
}
|
|
else if (lr.lr_start > off_start) {
|
|
next_hit = std::min(next_hit, lr.lr_start);
|
|
}
|
|
if (lr.lr_end > lr.lr_start) {
|
|
off = matches[1];
|
|
}
|
|
else {
|
|
off += 1;
|
|
}
|
|
}
|
|
else {
|
|
off = str.size();
|
|
}
|
|
}
|
|
}
|
|
|
|
range_out = std::make_pair(prev_hit, next_hit);
|
|
};
|
|
|
|
void set_search_action(action sa) { this->tc_search_action = sa; };
|
|
|
|
template<class _Receiver>
|
|
void set_search_action(action::mem_functor_t<_Receiver> *mf)
|
|
{
|
|
this->tc_search_action = action(mf);
|
|
};
|
|
|
|
void grep_end_batch(grep_proc &gp)
|
|
{
|
|
if (this->tc_follow_search &&
|
|
!this->tc_bookmarks[&BM_SEARCH].empty()) {
|
|
vis_line_t first_hit;
|
|
|
|
first_hit = this->tc_bookmarks[&BM_SEARCH].
|
|
next(vis_line_t(this->get_top() - 1));
|
|
if (first_hit != -1) {
|
|
if (first_hit > 0) {
|
|
--first_hit;
|
|
}
|
|
this->set_top(first_hit);
|
|
}
|
|
}
|
|
this->tc_search_action.invoke(this);
|
|
};
|
|
void grep_end(grep_proc &gp);
|
|
|
|
size_t listview_rows(const listview_curses &lv)
|
|
{
|
|
return this->tc_sub_source == NULL ? 0 :
|
|
this->tc_sub_source->text_line_count();
|
|
};
|
|
|
|
void listview_value_for_row(const listview_curses &lv,
|
|
vis_line_t line,
|
|
attr_line_t &value_out);
|
|
|
|
size_t listview_size_for_row(const listview_curses &lv, vis_line_t row) {
|
|
return this->tc_sub_source->text_size_for_line(*this, row);
|
|
};
|
|
|
|
std::string listview_source_name(const listview_curses &lv) {
|
|
return this->tc_sub_source == NULL ? "" :
|
|
this->tc_sub_source->text_source_name(*this);
|
|
};
|
|
|
|
bool grep_value_for_line(int line, std::string &value_out)
|
|
{
|
|
bool retval = false;
|
|
|
|
if (this->tc_sub_source != NULL &&
|
|
line < (int)this->tc_sub_source->text_line_count()) {
|
|
this->tc_sub_source->text_value_for_line(*this,
|
|
line,
|
|
value_out,
|
|
true);
|
|
retval = true;
|
|
}
|
|
|
|
return retval;
|
|
};
|
|
|
|
void grep_begin(grep_proc &gp);
|
|
void grep_match(grep_proc &gp,
|
|
grep_line_t line,
|
|
int start,
|
|
int end);
|
|
|
|
bool is_searching(void) { return this->tc_searching; };
|
|
|
|
void set_follow_search(bool fs) { this->tc_follow_search = fs; };
|
|
|
|
size_t get_match_count(void)
|
|
{
|
|
return this->tc_bookmarks[&BM_SEARCH].size();
|
|
};
|
|
|
|
void match_reset()
|
|
{
|
|
this->tc_bookmarks[&BM_SEARCH].clear();
|
|
if (this->tc_sub_source != NULL) {
|
|
this->tc_sub_source->text_clear_marks(&BM_SEARCH);
|
|
}
|
|
};
|
|
|
|
typedef std::map<std::string, highlighter> highlight_map_t;
|
|
|
|
highlight_map_t &get_highlights() { return this->tc_highlights; };
|
|
|
|
bool handle_mouse(mouse_event &me);
|
|
|
|
void reload_data(void);
|
|
|
|
void do_update(void) {
|
|
this->listview_curses::do_update();
|
|
if (this->tc_delegate != NULL) {
|
|
this->tc_delegate->text_overlay(*this);
|
|
}
|
|
};
|
|
|
|
protected:
|
|
text_sub_source *tc_sub_source;
|
|
text_delegate *tc_delegate;
|
|
|
|
vis_bookmarks tc_bookmarks;
|
|
|
|
vis_line_t tc_lview_top;
|
|
int tc_lview_left;
|
|
|
|
bool tc_searching;
|
|
bool tc_follow_search;
|
|
action tc_search_action;
|
|
|
|
highlight_map_t tc_highlights;
|
|
highlight_map_t::iterator tc_current_highlight;
|
|
|
|
vis_line_t tc_selection_start;
|
|
vis_line_t tc_selection_last;
|
|
bool tc_selection_cleared;
|
|
};
|
|
#endif
|