Telescope Browser

Blame

Date:: Fri Jun 14 22:15:12 2024 UTC
Message:: untangle a bit buffers and parsers Now buffers have a nicer interface, taking explicitly the buffer where they push stuff, and the code that deals with buffers doesn't need to peek into the parsers. The parsers now are 'pure' structs without state attached to them, the state was moved to the buffer.
Actions:: History | Blob | Raw File
  1 b1e1e41a 2021-07-14 op /*
  2 5a39f593 2024-02-05 op  * Copyright (c) 2021, 2024 Omar Polo <op@omarpolo.com>
  3 b1e1e41a 2021-07-14 op  *
  4 b1e1e41a 2021-07-14 op  * Permission to use, copy, modify, and distribute this software for any
  5 b1e1e41a 2021-07-14 op  * purpose with or without fee is hereby granted, provided that the above
  6 b1e1e41a 2021-07-14 op  * copyright notice and this permission notice appear in all copies.
  7 b1e1e41a 2021-07-14 op  *
  8 b1e1e41a 2021-07-14 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 b1e1e41a 2021-07-14 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 b1e1e41a 2021-07-14 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 b1e1e41a 2021-07-14 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 b1e1e41a 2021-07-14 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 b1e1e41a 2021-07-14 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 b1e1e41a 2021-07-14 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 b1e1e41a 2021-07-14 op  */
 16 b1e1e41a 2021-07-14 op 
 17 786e6deb 2021-07-21 op #include "compat.h"
 18 786e6deb 2021-07-21 op 
 19 b1e1e41a 2021-07-14 op #include <stdlib.h>
 20 b1e1e41a 2021-07-14 op 
 21 5a39f593 2024-02-05 op #include "certs.h"
 22 cbe2da32 2024-02-06 op #include "cmd.h"
 23 b1e1e41a 2021-07-14 op #include "compl.h"
 24 65c49665 2024-01-23 op #include "hist.h"
 25 b1e1e41a 2021-07-14 op #include "telescope.h"
 26 43f29a9e 2022-02-26 op #include "session.h"
 27 b1e1e41a 2021-07-14 op 
 28 a6717110 2021-07-14 op /*
 29 43f29a9e 2022-02-26 op  * Provide completions for load-url (lu).
 30 43f29a9e 2022-02-26 op  */
 31 43f29a9e 2022-02-26 op const char *
 32 43f29a9e 2022-02-26 op compl_lu(void **data, void **ret, const char **descr)
 33 43f29a9e 2022-02-26 op {
 34 43f29a9e 2022-02-26 op 	struct history_item **state = (struct history_item **)data;
 35 43f29a9e 2022-02-26 op 
 36 43f29a9e 2022-02-26 op 	/* first time: init the state */
 37 43f29a9e 2022-02-26 op 	if (*state == NULL)
 38 43f29a9e 2022-02-26 op 		*state = history.items;
 39 43f29a9e 2022-02-26 op 
 40 43f29a9e 2022-02-26 op 	if (*state == history.items + history.len)
 41 43f29a9e 2022-02-26 op 		return NULL;
 42 43f29a9e 2022-02-26 op 
 43 43f29a9e 2022-02-26 op 	return (*state)++->uri;
 44 43f29a9e 2022-02-26 op }
 45 43f29a9e 2022-02-26 op 
 46 43f29a9e 2022-02-26 op /*
 47 a6717110 2021-07-14 op  * Provide completions for execute-extended-command (eecmd).
 48 a6717110 2021-07-14 op  */
 49 b1e1e41a 2021-07-14 op const char *
 50 b3be07ea 2021-07-18 op compl_eecmd(void **data, void **ret, const char **descr)
 51 b1e1e41a 2021-07-14 op {
 52 b1e1e41a 2021-07-14 op 	struct cmd	**state = (struct cmd **)data;
 53 b1e1e41a 2021-07-14 op 
 54 b1e1e41a 2021-07-14 op 	/* first time: init the state */
 55 b1e1e41a 2021-07-14 op 	if (*state == NULL)
 56 b1e1e41a 2021-07-14 op 		*state = cmds;
 57 b1e1e41a 2021-07-14 op 
 58 b1e1e41a 2021-07-14 op 	if ((*state)->cmd == NULL)
 59 b1e1e41a 2021-07-14 op 		return NULL;
 60 b1e1e41a 2021-07-14 op 
 61 b3be07ea 2021-07-18 op 	*descr = (*state)->descr;
 62 af48e20e 2021-07-14 op 	return (*state)++->cmd;
 63 b1e1e41a 2021-07-14 op }
 64 65601367 2021-07-14 op 
 65 a6717110 2021-07-14 op /*
 66 a6717110 2021-07-14 op  * Provide completions for tab-select.
 67 a6717110 2021-07-14 op  */
 68 65601367 2021-07-14 op const char *
 69 b3be07ea 2021-07-18 op compl_ts(void **data, void **ret, const char **descr)
 70 65601367 2021-07-14 op {
 71 65601367 2021-07-14 op 	struct tab	**tab = (struct tab **)data;
 72 65601367 2021-07-14 op 
 73 65601367 2021-07-14 op 	/* first time: init the state */
 74 65601367 2021-07-14 op 	if (*tab == NULL)
 75 65601367 2021-07-14 op 		*tab = TAILQ_FIRST(&tabshead);
 76 65601367 2021-07-14 op 	else if ((*tab = TAILQ_NEXT(*tab, tabs)) == NULL)
 77 65601367 2021-07-14 op 		return NULL;
 78 65601367 2021-07-14 op 
 79 65601367 2021-07-14 op 	*ret = *tab;
 80 65601367 2021-07-14 op 
 81 c1d27b0e 2024-06-14 op 	if (*(*tab)->buffer.title == '\0')
 82 65c49665 2024-01-23 op 		return hist_cur((*tab)->hist);
 83 65c49665 2024-01-23 op 	*descr = hist_cur((*tab)->hist);
 84 c1d27b0e 2024-06-14 op 	return (*tab)->buffer.title;
 85 65601367 2021-07-14 op }
 86 753c6ac7 2021-07-14 op 
 87 753c6ac7 2021-07-14 op /*
 88 753c6ac7 2021-07-14 op  * Provide completions for link-select.
 89 753c6ac7 2021-07-14 op  */
 90 753c6ac7 2021-07-14 op const char *
 91 b3be07ea 2021-07-18 op compl_ls(void **data, void **ret, const char **descr)
 92 753c6ac7 2021-07-14 op {
 93 753c6ac7 2021-07-14 op 	struct line	**line = (struct line **)data;
 94 753c6ac7 2021-07-14 op 	struct line	*l;
 95 753c6ac7 2021-07-14 op 	const char	*link;
 96 753c6ac7 2021-07-14 op 
 97 753c6ac7 2021-07-14 op 	l = *line;
 98 753c6ac7 2021-07-14 op 	while (l != NULL && l->type != LINE_LINK)
 99 753c6ac7 2021-07-14 op 		l = TAILQ_NEXT(l, lines);
100 753c6ac7 2021-07-14 op 
101 753c6ac7 2021-07-14 op 	/* end of buffer */
102 753c6ac7 2021-07-14 op 	if (l == NULL)
103 753c6ac7 2021-07-14 op 		return NULL;
104 753c6ac7 2021-07-14 op 
105 b3be07ea 2021-07-18 op 	if ((link = l->line) == NULL) {
106 f29fe8ca 2021-07-16 op 		link = l->alt;
107 b3be07ea 2021-07-18 op 		*descr = NULL;
108 b3be07ea 2021-07-18 op 	} else
109 b3be07ea 2021-07-18 op 		*descr = l->alt;
110 f29fe8ca 2021-07-16 op 
111 753c6ac7 2021-07-14 op 	*ret = l;
112 753c6ac7 2021-07-14 op 	*line = TAILQ_NEXT(l, lines);
113 753c6ac7 2021-07-14 op 	return link;
114 753c6ac7 2021-07-14 op }
115 753c6ac7 2021-07-14 op 
116 753c6ac7 2021-07-14 op /*
117 c7453a38 2021-07-15 op  * Provide completions for swiper.
118 753c6ac7 2021-07-14 op  */
119 753c6ac7 2021-07-14 op const char *
120 b3be07ea 2021-07-18 op compl_swiper(void **data, void **ret, const char **descr)
121 753c6ac7 2021-07-14 op {
122 753c6ac7 2021-07-14 op 	struct line	**line = (struct line **)data;
123 753c6ac7 2021-07-14 op 	const char	*text;
124 753c6ac7 2021-07-14 op 
125 753c6ac7 2021-07-14 op 	while (*line != NULL && (*line)->line == NULL)
126 753c6ac7 2021-07-14 op 		*line = TAILQ_NEXT(*line, lines);
127 753c6ac7 2021-07-14 op 
128 753c6ac7 2021-07-14 op 	if (*line == NULL)
129 753c6ac7 2021-07-14 op 		return NULL;
130 753c6ac7 2021-07-14 op 
131 753c6ac7 2021-07-14 op 	text = (*line)->line;
132 753c6ac7 2021-07-14 op 	*ret = *line;
133 753c6ac7 2021-07-14 op 	*line = TAILQ_NEXT(*line, lines);
134 753c6ac7 2021-07-14 op 	return text;
135 753c6ac7 2021-07-14 op }
136 edd9a650 2021-07-15 op 
137 edd9a650 2021-07-15 op /*
138 edd9a650 2021-07-15 op  * Provide completions for toc
139 edd9a650 2021-07-15 op  */
140 edd9a650 2021-07-15 op const char *
141 b3be07ea 2021-07-18 op compl_toc(void **data, void **ret, const char **descr)
142 edd9a650 2021-07-15 op {
143 edd9a650 2021-07-15 op 	struct line	**line = (struct line **)data;
144 edd9a650 2021-07-15 op 	struct line	*l;
145 edd9a650 2021-07-15 op 	const char	*text;
146 edd9a650 2021-07-15 op 
147 edd9a650 2021-07-15 op 	l = *line;
148 f29fe8ca 2021-07-16 op 	while (l != NULL && (l->line == NULL ||
149 f29fe8ca 2021-07-16 op 	    (l->type != LINE_TITLE_1 &&
150 edd9a650 2021-07-15 op 	    l->type != LINE_TITLE_2 &&
151 f29fe8ca 2021-07-16 op 	    l->type != LINE_TITLE_3)))
152 edd9a650 2021-07-15 op 		l = TAILQ_NEXT(l, lines);
153 edd9a650 2021-07-15 op 
154 edd9a650 2021-07-15 op 	/* end of buffer */
155 edd9a650 2021-07-15 op 	if (l == NULL)
156 edd9a650 2021-07-15 op 		return NULL;
157 edd9a650 2021-07-15 op 
158 edd9a650 2021-07-15 op 	text = l->line;
159 edd9a650 2021-07-15 op 	*ret = l;
160 edd9a650 2021-07-15 op 	*line = TAILQ_NEXT(l, lines);
161 edd9a650 2021-07-15 op 	return text;
162 edd9a650 2021-07-15 op }
163 5a39f593 2024-02-05 op 
164 5a39f593 2024-02-05 op /*
165 5a39f593 2024-02-05 op  * Provide completions for use-certificate
166 5a39f593 2024-02-05 op  */
167 5a39f593 2024-02-05 op const char *
168 5a39f593 2024-02-05 op compl_uc(void **data, void **ret, const char **descr)
169 5a39f593 2024-02-05 op {
170 5a39f593 2024-02-05 op 	const char	***state = (const char ***)data;
171 5a39f593 2024-02-05 op 
172 5a39f593 2024-02-05 op 	/* first time: init the state */
173 5a39f593 2024-02-05 op 	if (*state == NULL)
174 5a39f593 2024-02-05 op 		*state = (const char **)identities;
175 5a39f593 2024-02-05 op 
176 5a39f593 2024-02-05 op 	if (**state == NULL)
177 5a39f593 2024-02-05 op 		return NULL;
178 5a39f593 2024-02-05 op 
179 5a39f593 2024-02-05 op 	/* XXX filling descr too would be nice */
180 5a39f593 2024-02-05 op 	return *((*state)++);
181 5a39f593 2024-02-05 op }