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2016-01-10text: introduce text_bytes_alloc0 utility functionMarc André Tanner1-0/+12
Heap allocates a zero terminated string of the given range. Freeing is the caller's responsibility. Checks for unsigned integer overflow i.e. passing SIZE_MAX as len will always fail because there is no room for the terminating NUL byte. This is important as EPOS is defined to be SIZE_MAX.
2015-12-31text: let text_pos_by_lineno return EPOS if given a too large line numberMarc André Tanner1-1/+1
2015-12-31text: introduce text_newline_insertMarc André Tanner1-0/+11
2015-12-29Clean up build systemMarc André Tanner1-6/+6
2015-11-23text: introduce functions to iterate over graphemesMarc André Tanner1-2/+55
They currently consider any character for which wcwidth(3) return 0 as a combining character.
2015-11-20text: get modification time after replacing file content in placeMarc André Tanner1-0/+2
At the start of text_save_range we stat(2) the file to check whether we have currently mmap(2)-ed it. Then we proceed to write the new file content which changes modification time. Hence we have to stat(2) again to retrieve it. This should fix spurious warnings about file changes outside the editor when editing e.g. symlinked files.
2015-11-08Update year numbers in Copyright clauseMarc André Tanner1-1/+1
2015-11-02text: return end of changed range in text_redoMarc André Tanner1-0/+2
This affects the cursor placement when redoing changes in single cursor mode. Closes #42
2015-10-22text: introduce text_appendf utility functionMarc André Tanner1-0/+8
2015-10-09text: fix usage of va_arg in text_vprintfDavid B. Lamkins1-1/+4
Closes #76
2015-10-05text: add text_{v,}printf functionMarc André Tanner1-0/+18
Convenient way to insert formated data into a Text.
2015-08-08text: rename some functions to improve consistencyMarc André Tanner1-7/+7
2015-08-08text: introduce helper function text_delete_rangeMarc André Tanner1-0/+6
2015-07-28text: move utility functions to separate fileMarc André Tanner1-36/+1
2015-07-25text: handle marks set to 0 and text_size(...)Marc André Tanner1-0/+8
2015-07-25text: add text_range_overlapMarc André Tanner1-0/+6
2015-07-22text: introduce text_range_newMarc André Tanner1-0/+7
2015-07-19vis: handle file truncation more gracefullyMarc André Tanner1-0/+8
If we use the file / virtual memory system as cache (using mmap(2)) and another process truncates the file we are editing, we have a problem. All we can do is catch the resulting SIGBUS, close the corresponding window and print a warning message. To test this use: $ dd if=/dev/zero of=TEST bs=8M count=1 $ vis TEST :! echo TRUNCATE > TEST
2015-07-19text: move regex related functions to separate fileMarc André Tanner1-68/+0
Eventually this should probably be rewritten to use an iternal regex engine, currently it has unacceptable memory usage, it copies the whole text.
2015-07-19text: slight cleanup, add a few commentsMarc André Tanner1-17/+22
2015-07-10text: upon successfull file save store new modification timeMarc André Tanner1-7/+11
2015-07-07text: safer temporary file creationMarc André Tanner1-1/+4
Set umask before calling mkstemp. According to POSIX 2008 this is not necessary since the temporary file is guaranteed to be created with permission restricted to the current user. However this is more secure on non-conforming systems and safe as long as we do not use multiple threads. Fixes Coverity CID 101333.
2015-07-07text: avoid double close in error caseMarc André Tanner1-0/+1
2015-07-07text: remove left over debugging codeMarc André Tanner1-6/+0
2015-07-06Warn when saving a file which has been changed outside the editorMarc André Tanner1-1/+8
2015-07-06text: remove text_load_fd and text_fd_getMarc André Tanner1-29/+10
2015-07-06Move filename from Text to FileMarc André Tanner1-14/+0
Also apply syntax rules every time the file name changes.
2015-07-06text: overhaul file load implementationMarc André Tanner1-3/+34
Files smaller than 8M are now copied into an internal buffer upon load. Thus they can be safely truncated. Larger files are memory mapped and use the file/virtual memory system as caching layer. Hence truncating them will corrupt the file content. Eventually the resulting SIGBUS should be handled gracefully.
2015-07-06text: overhaul save implemenationMarc André Tanner1-38/+193
Try to do an atomic save using rename(2) unless * the file is a symbolic link * the file is a hard link * file ownership can not be preserved * file group can not be preserved * POSXI ACL can not be preserved (if enabled) * SELinux security context can not be preserved (if enabled) in which case the file is overwritten in place. However a failure to do so results in data loss. Closes #47.
2015-07-05text: store buffer allocation type (mmap or malloc)Marc André Tanner1-16/+33
2015-07-03Do not take a snapshot in text_range_writeSilvan Jegen1-2/+0
Since text_range_write is called several times in cmd_filter, the undo command does not undo the whole filter operation but only up to the last call of text_range_write. Removing the snapshot-taking code solves this issue.
2015-07-03Remove text dump debugging codeMarc André Tanner1-16/+0
Instead use the text-dump git branch if necessary.
2015-06-28Fix copy/paste error in text_restoreMarc André Tanner1-1/+1
This really needs some unit tests.
2015-06-28Replace a->time with a->seq in history_traverse_toRyan Chipman1-3/+3
2015-06-28Add seq field to Action structRyan Chipman1-0/+8
2015-06-27Make :earlier and :later accept arguments similar to vimMarc André Tanner1-8/+30
Currently the following arguments are accepted: {count} Go to older text state {count} times. {N}s Go to older text state about {N} seconds before. {N}m Go to older text state about {N} minutes before. {N}h Go to older text state about {N} hours before. {N}d Go to older text state about {N} days before
2015-06-27Mark internal undo tree functions as staticMarc André Tanner1-4/+4
2015-06-27Core undo tree changesRyan Chipman1-50/+130
2015-06-24fixed some typos in commentsRyan Chipman1-2/+2
2015-04-22Cleanup line ending type detection and insertionMarc André Tanner1-7/+13
2015-04-05Introduce new struct VisTextMarc André Tanner1-24/+0
This adds yet another layer of indirection and stores vi related stuff which is associated with a given text but shared among all windows displaying it (e.g. marks). This will also help if one wants to keep texts arround which aren't currently displayed.
2015-02-03Fix :nnn where nnn > maximal number of linesMarc André Tanner1-5/+9
2015-01-18Do not leak memory in repeated text_filename_set callsMarc André Tanner1-3/+4
2015-01-16Print debug output to stdoutMarc André Tanner1-4/+4
Stderr is used for the editor output to make usage as a filter possible.
2015-01-16Avoid possible double close when savingMarc André Tanner1-0/+1
We want close(2) to happen before rename(2). At some point the save implementation will have to be overhauled.
2015-01-11More useful error message when opening non regular filesMarc André Tanner1-1/+1
2015-01-06Rudimentary change list (accessible via g; and g,)Marc André Tanner1-0/+12
2015-01-03Fix size_t specifiers in format stringsMatthias Braun1-1/+1
2015-01-02Rip out insertion repeating infrastructureMarc André Tanner1-13/+0
2015-01-01Introduce externally managed marksMarc André Tanner1-12/+23
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