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Date:: Tue Oct 22 18:40:42 2024 UTC
Message:: handle tab characters tab characters have their width depending on the column they're in, since they extend to the next multiple of 8. (citation needed?) So, keep track of the column when considering the length (in columns) of the text, so that we can render them properly. In the future we might want to turn them into spaces (either at read or render time) just to stay on the safe side in case not all terminals/ncurses implementations use 8 columns.
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  1 6ab857d5 2024-01-23 op /*
  2 b66e7d4d 2024-02-06 op  * Copyright (c) 2021, 2024 Omar Polo <op@omarpolo.com>
  3 6ab857d5 2024-01-23 op  *
  4 6ab857d5 2024-01-23 op  * Permission to use, copy, modify, and distribute this software for any
  5 6ab857d5 2024-01-23 op  * purpose with or without fee is hereby granted, provided that the above
  6 6ab857d5 2024-01-23 op  * copyright notice and this permission notice appear in all copies.
  7 6ab857d5 2024-01-23 op  *
  8 6ab857d5 2024-01-23 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 6ab857d5 2024-01-23 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 6ab857d5 2024-01-23 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 6ab857d5 2024-01-23 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 6ab857d5 2024-01-23 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 6ab857d5 2024-01-23 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 6ab857d5 2024-01-23 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 6ab857d5 2024-01-23 op  */
 16 6ab857d5 2024-01-23 op 
 17 6ab857d5 2024-01-23 op #ifndef TELESCOPE_H
 18 6ab857d5 2024-01-23 op #define TELESCOPE_H
 19 6ab857d5 2024-01-23 op 
 20 6ab857d5 2024-01-23 op #include <limits.h>
 21 6ab857d5 2024-01-23 op #include <stdio.h>		/* XXX: for parsers.h */
 22 6ab857d5 2024-01-23 op 
 23 6ab857d5 2024-01-23 op #include "iri.h"
 24 6ab857d5 2024-01-23 op 
 25 6ab857d5 2024-01-23 op #define MIN(a, b) ((a) < (b) ? (a) : (b))
 26 6ab857d5 2024-01-23 op #define MAX(a, b) ((a) > (b) ? (a) : (b))
 27 6ab857d5 2024-01-23 op 
 28 6ab857d5 2024-01-23 op #define GEMINI_URL_LEN 1024
 29 6ab857d5 2024-01-23 op #define TITLE_MAX 128+1		/* account for NUL too */
 30 6ab857d5 2024-01-23 op 
 31 6ab857d5 2024-01-23 op #define SIDE_WINDOW_LEFT	0x1
 32 6ab857d5 2024-01-23 op #define SIDE_WINDOW_BOTTOM	0x2
 33 6ab857d5 2024-01-23 op 
 34 6ab857d5 2024-01-23 op enum line_type {
 35 6ab857d5 2024-01-23 op 	/* text/gemini */
 36 6ab857d5 2024-01-23 op 	LINE_TEXT,
 37 6ab857d5 2024-01-23 op 	LINE_LINK,
 38 6ab857d5 2024-01-23 op 	LINE_TITLE_1,
 39 6ab857d5 2024-01-23 op 	LINE_TITLE_2,
 40 6ab857d5 2024-01-23 op 	LINE_TITLE_3,
 41 6ab857d5 2024-01-23 op 	LINE_ITEM,
 42 6ab857d5 2024-01-23 op 	LINE_QUOTE,
 43 6ab857d5 2024-01-23 op 	LINE_PRE_START,
 44 6ab857d5 2024-01-23 op 	LINE_PRE_CONTENT,
 45 6ab857d5 2024-01-23 op 	LINE_PRE_END,
 46 6ab857d5 2024-01-23 op 
 47 6ab857d5 2024-01-23 op 	/* text/x-patch */
 48 6ab857d5 2024-01-23 op 	LINE_PATCH,
 49 6ab857d5 2024-01-23 op 	LINE_PATCH_HDR,
 50 6ab857d5 2024-01-23 op 	LINE_PATCH_HUNK_HDR,
 51 6ab857d5 2024-01-23 op 	LINE_PATCH_ADD,
 52 6ab857d5 2024-01-23 op 	LINE_PATCH_DEL,
 53 6ab857d5 2024-01-23 op 
 54 6ab857d5 2024-01-23 op 	/* minibuffer */
 55 6ab857d5 2024-01-23 op 	LINE_COMPL,
 56 6ab857d5 2024-01-23 op 	LINE_COMPL_CURRENT,
 57 6ab857d5 2024-01-23 op 
 58 6ab857d5 2024-01-23 op 	/* help */
 59 6ab857d5 2024-01-23 op 	LINE_HELP,
 60 6ab857d5 2024-01-23 op 
 61 6ab857d5 2024-01-23 op 	/* download */
 62 6ab857d5 2024-01-23 op 	LINE_DOWNLOAD,
 63 6ab857d5 2024-01-23 op 	LINE_DOWNLOAD_DONE,
 64 6ab857d5 2024-01-23 op 	LINE_DOWNLOAD_INFO,
 65 6ab857d5 2024-01-23 op 
 66 6ab857d5 2024-01-23 op 	/* misc ui */
 67 6ab857d5 2024-01-23 op 	LINE_FRINGE,
 68 6ab857d5 2024-01-23 op };
 69 6ab857d5 2024-01-23 op 
 70 6ab857d5 2024-01-23 op struct line {
 71 6ab857d5 2024-01-23 op 	enum line_type		 type;
 72 6ab857d5 2024-01-23 op 	char			*line;
 73 6ab857d5 2024-01-23 op 	char			*alt;
 74 6ab857d5 2024-01-23 op 	void			*data;
 75 6ab857d5 2024-01-23 op 
 76 6ab857d5 2024-01-23 op #define L_HIDDEN	0x1
 77 6ab857d5 2024-01-23 op 	int			 flags;
 78 6ab857d5 2024-01-23 op 	TAILQ_ENTRY(line)	 lines;
 79 6ab857d5 2024-01-23 op };
 80 6ab857d5 2024-01-23 op 
 81 6ab857d5 2024-01-23 op struct vline {
 82 6ab857d5 2024-01-23 op 	struct line		*parent;
 83 6ab857d5 2024-01-23 op 	size_t			 from;
 84 6ab857d5 2024-01-23 op 	size_t			 len;
 85 6ab857d5 2024-01-23 op 
 86 6ab857d5 2024-01-23 op #define L_CONTINUATION	0x2
 87 6ab857d5 2024-01-23 op 	int			 flags;
 88 6ab857d5 2024-01-23 op 	TAILQ_ENTRY(vline)	 vlines;
 89 6ab857d5 2024-01-23 op };
 90 6ab857d5 2024-01-23 op 
 91 6ab857d5 2024-01-23 op /*
 92 1d91acb2 2024-06-01 op  * different types of trust for a certificate.  Following
 93 6ab857d5 2024-01-23 op  * gemini://thfr.info/gemini/modified-trust-verify.gmi
 94 6ab857d5 2024-01-23 op  */
 95 6ab857d5 2024-01-23 op enum trust_state {
 96 6ab857d5 2024-01-23 op 	TS_UNKNOWN,
 97 6ab857d5 2024-01-23 op 	TS_UNTRUSTED,
 98 6ab857d5 2024-01-23 op 	TS_TEMP_TRUSTED,
 99 6ab857d5 2024-01-23 op 	TS_TRUSTED,
100 6ab857d5 2024-01-23 op 	TS_VERIFIED,
101 6ab857d5 2024-01-23 op };
102 6ab857d5 2024-01-23 op 
103 c1d27b0e 2024-06-14 op struct parser;
104 c1d27b0e 2024-06-14 op 
105 6ab857d5 2024-01-23 op struct buffer {
106 c1d27b0e 2024-06-14 op 	char			 title[128 + 1];
107 c1d27b0e 2024-06-14 op 	const char		*mode;
108 c1d27b0e 2024-06-14 op 	char			*buf;
109 c1d27b0e 2024-06-14 op 	size_t			 len;
110 c1d27b0e 2024-06-14 op 	size_t			 cap;
111 6ab857d5 2024-01-23 op 
112 c1d27b0e 2024-06-14 op #define PARSER_IN_BODY	1
113 c1d27b0e 2024-06-14 op #define PARSER_IN_PRE	2
114 c1d27b0e 2024-06-14 op #define PARSER_IN_PATCH_HDR 4
115 c1d27b0e 2024-06-14 op 	int			 parser_flags;
116 fd1c80ce 2024-06-14 op 	const struct parser	*parser;
117 c1d27b0e 2024-06-14 op 
118 6ab857d5 2024-01-23 op 	size_t			 last_line_off;
119 6ab857d5 2024-01-23 op 	int			 force_redraw;
120 6ab857d5 2024-01-23 op 
121 6ab857d5 2024-01-23 op 	int			 curs_x;
122 6ab857d5 2024-01-23 op 	int			 curs_y;
123 6ab857d5 2024-01-23 op 	size_t			 line_off;
124 6ab857d5 2024-01-23 op 	size_t			 line_max;
125 6ab857d5 2024-01-23 op 	struct vline		*top_line;
126 6ab857d5 2024-01-23 op 	struct vline		*current_line;
127 6d24bfb3 2024-10-19 op 	size_t			 point_offset;
128 c1d27b0e 2024-06-14 op 
129 c1d27b0e 2024-06-14 op 	TAILQ_HEAD(, line)	 head;
130 c1d27b0e 2024-06-14 op 	TAILQ_HEAD(vhead, vline) vhead;
131 6ab857d5 2024-01-23 op };
132 6ab857d5 2024-01-23 op 
133 6ab857d5 2024-01-23 op #define TAB_CURRENT	0x1	/* only for save_session */
134 6ab857d5 2024-01-23 op #define TAB_KILLED	0x2	/* only for save_session */
135 6ab857d5 2024-01-23 op #define TAB_URGENT	0x4
136 6ab857d5 2024-01-23 op #define TAB_LAZY	0x8	/* to lazy load tabs */
137 6ab857d5 2024-01-23 op 
138 6ab857d5 2024-01-23 op #define NEW_TAB_URL	"about:new"
139 6ab857d5 2024-01-23 op 
140 6ab857d5 2024-01-23 op struct hist;
141 6ab857d5 2024-01-23 op 
142 6ab857d5 2024-01-23 op TAILQ_HEAD(tabshead, tab);
143 6ab857d5 2024-01-23 op extern struct tabshead tabshead;
144 6ab857d5 2024-01-23 op extern struct tabshead ktabshead;
145 6ab857d5 2024-01-23 op struct tab {
146 6ab857d5 2024-01-23 op 	TAILQ_ENTRY(tab)	 tabs;
147 6ab857d5 2024-01-23 op 	uint32_t		 id;
148 6ab857d5 2024-01-23 op 	uint32_t		 flags;
149 6ab857d5 2024-01-23 op 
150 6ab857d5 2024-01-23 op 	char			*cert;
151 6ab857d5 2024-01-23 op 	enum trust_state	 trust;
152 a3e4d56b 2024-05-25 thomas.ad 	int			 faulty_gemserver;
153 d35e18b3 2024-02-04 op 	const char		*client_cert;
154 71bc1636 2024-02-06 op 	int			 client_cert_temp;
155 6ab857d5 2024-01-23 op 	struct proxy		*proxy;
156 6ab857d5 2024-01-23 op 	struct iri		 iri;
157 6ab857d5 2024-01-23 op 	struct hist		*hist;
158 6ab857d5 2024-01-23 op 	char			*last_input_url;
159 6ab857d5 2024-01-23 op 
160 6ab857d5 2024-01-23 op 	int			 code;
161 6ab857d5 2024-01-23 op 	char			 meta[GEMINI_URL_LEN];
162 6ab857d5 2024-01-23 op 	int			 redirect_count;
163 6ab857d5 2024-01-23 op 
164 6ab857d5 2024-01-23 op 	struct buffer		 buffer;
165 6ab857d5 2024-01-23 op 
166 6ab857d5 2024-01-23 op 	short			 loading_anim;
167 6ab857d5 2024-01-23 op 	short			 loading_anim_step;
168 98d3e6c1 2024-02-18 op 	unsigned long		 loading_timer;
169 6ab857d5 2024-01-23 op };
170 6ab857d5 2024-01-23 op 
171 6ab857d5 2024-01-23 op extern TAILQ_HEAD(proxylist, proxy) proxies;
172 6ab857d5 2024-01-23 op struct proxy {
173 6ab857d5 2024-01-23 op 	char	*match_proto;
174 6ab857d5 2024-01-23 op 
175 6ab857d5 2024-01-23 op 	char	*host;
176 6ab857d5 2024-01-23 op 	char	*port;
177 6ab857d5 2024-01-23 op 	int	 proto;
178 6ab857d5 2024-01-23 op 
179 6ab857d5 2024-01-23 op 	TAILQ_ENTRY(proxy) proxies;
180 6ab857d5 2024-01-23 op };
181 6ab857d5 2024-01-23 op 
182 6ab857d5 2024-01-23 op enum {
183 6ab857d5 2024-01-23 op 	PROTO_FINGER,
184 6ab857d5 2024-01-23 op 	PROTO_GEMINI,
185 6ab857d5 2024-01-23 op 	PROTO_GOPHER,
186 6ab857d5 2024-01-23 op 	/* ... */
187 6ab857d5 2024-01-23 op };
188 6ab857d5 2024-01-23 op 
189 6ab857d5 2024-01-23 op struct get_req {
190 6ab857d5 2024-01-23 op 	int		proto;
191 6ab857d5 2024-01-23 op 	char		host[254];
192 6ab857d5 2024-01-23 op 	char		port[16];
193 6ab857d5 2024-01-23 op 	char		req[1027];
194 6ab857d5 2024-01-23 op };
195 6ab857d5 2024-01-23 op 
196 6ab857d5 2024-01-23 op /* downloads.c */
197 6ab857d5 2024-01-23 op extern STAILQ_HEAD(downloads, download) downloads;
198 6ab857d5 2024-01-23 op struct download {
199 6ab857d5 2024-01-23 op 	uint32_t		 id;
200 6ab857d5 2024-01-23 op 	int			 fd;
201 6ab857d5 2024-01-23 op 	size_t			 bytes;
202 7b7a69f2 2024-06-13 thomas.ad 	char 			*mime_type;
203 6ab857d5 2024-01-23 op 	char			*path;
204 6ab857d5 2024-01-23 op 	STAILQ_ENTRY(download)	 entries;
205 6ab857d5 2024-01-23 op };
206 6ab857d5 2024-01-23 op 
207 6ab857d5 2024-01-23 op void		 recompute_downloads(void);
208 7b7a69f2 2024-06-13 thomas.ad struct download	*enqueue_download(uint32_t, const char *, const char *);
209 6ab857d5 2024-01-23 op struct download	*download_by_id(uint32_t);
210 4e32d3a6 2024-06-04 thomas.ad void 	 	 download_finished(struct download *);
211 6ab857d5 2024-01-23 op 
212 6ab857d5 2024-01-23 op /* help.c */
213 6ab857d5 2024-01-23 op void		 recompute_help(void);
214 6ab857d5 2024-01-23 op 
215 6ab857d5 2024-01-23 op /* mime.c */
216 6ab857d5 2024-01-23 op int		 setup_parser_for(struct tab*);
217 6ab857d5 2024-01-23 op 
218 6ab857d5 2024-01-23 op /* net.c */
219 6ab857d5 2024-01-23 op int		 net_main(void);
220 6ab857d5 2024-01-23 op 
221 6ab857d5 2024-01-23 op /* parse.y */
222 6ab857d5 2024-01-23 op void		 parseconfig(const char *, int);
223 6ab857d5 2024-01-23 op 
224 6ab857d5 2024-01-23 op /* sandbox.c */
225 6ab857d5 2024-01-23 op void		 sandbox_net_process(void);
226 6ab857d5 2024-01-23 op void		 sandbox_ui_process(void);
227 6ab857d5 2024-01-23 op 
228 6ab857d5 2024-01-23 op /* telescope.c */
229 6ab857d5 2024-01-23 op extern int operating;
230 6ab857d5 2024-01-23 op extern int safe_mode;
231 6ab857d5 2024-01-23 op 
232 6ab857d5 2024-01-23 op #define LU_MODE_NONE	0x0
233 6ab857d5 2024-01-23 op #define LU_MODE_NOHIST	0x1
234 6ab857d5 2024-01-23 op #define LU_MODE_NOCACHE	0x2
235 6ab857d5 2024-01-23 op 
236 6ab857d5 2024-01-23 op void		 gopher_send_search_req(struct tab *, const char *);
237 6ab857d5 2024-01-23 op void		 load_page_from_str(struct tab *, const char *);
238 6ab857d5 2024-01-23 op void		 load_url(struct tab *, const char *, const char *, int);
239 6ab857d5 2024-01-23 op void		 load_url_in_tab(struct tab *, const char *, const char *, int);
240 6ab857d5 2024-01-23 op int		 load_previous_page(struct tab*);
241 6ab857d5 2024-01-23 op int		 load_next_page(struct tab*);
242 6ab857d5 2024-01-23 op void		 write_buffer(const char *, struct tab *);
243 6ab857d5 2024-01-23 op void		 humanify_url(const char *, const char *, char *, size_t);
244 6ab857d5 2024-01-23 op int		 bookmark_page(const char *);
245 d35e18b3 2024-02-04 op int		 ui_send_net(int, uint32_t, int, const void *, uint16_t);
246 6ab857d5 2024-01-23 op 
247 6ab857d5 2024-01-23 op /* wrap.c */
248 6ab857d5 2024-01-23 op void		 erase_buffer(struct buffer *);
249 6ab857d5 2024-01-23 op void		 empty_linelist(struct buffer*);
250 6ab857d5 2024-01-23 op void		 empty_vlist(struct buffer*);
251 f853ec6f 2024-10-22 op int		 wrap_text(struct buffer*, const char*, struct line*, size_t, int, int);
252 f853ec6f 2024-10-22 op int		 wrap_page(struct buffer *, int, int);
253 6ab857d5 2024-01-23 op 
254 6ab857d5 2024-01-23 op #endif /* TELESCOPE_H */