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-ChangeLog
-
-v1.15 2017/08/05
- (2017/08/05) PS1 - use round() instead of rint()
- (2017/08/05) PS1 - portability: set both _POSIX_C_SOURCE and
- _NETBSD_SOURCE to enable strdup prototype in string.h, as
- _XOPEN_SOURCE=500 doesn't work on macOS, _XOPEN_SOURCE=600 doesn't
- work on SunOS, and _POSIX_C_SOURCE alone doesn't work on Minix.
- (2017/08/02) PS1 - fixed a potential arithmetic overflow.
- (2017/06/17) PS1 - fixed a bug with very large bitmaps. Reported
- by Michael Voříšek.
- (2017/03/05) PS1 - autoconf: added --enable-local-getopt to avoid
- using the system-wide getopt library (it may still end up being
- used on GNU systems).
- (2017/03/05) PS1 - portability: moved getopt.h to a subdirectory,
- to be included only when needed. Reported by Daniel Macks.
- (2017/03/05) PS1 - portability: use _XOPEN_SOURCE=600 to fix macOS
- warning.
- (2017/02/27) PS1 - fixed more buffer overflows (not security
- critical), including one reported by Agostino Sarubbo. This also
- fixes CVE-2017-12067.
-
-v1.14 2017/02/19
- (2017/02/19) PS1 - speed: use clang as default compiler if
- available, and no longer use -ffloat-store even with gcc.
- (2017/02/18) PS1 - corrected some exit codes, added some missing
- error handlers.
- (2017/02/17) PS1 - mkbitmap: bugfixes and improvements in parsing
- image files.
- (2017/02/15) PS1 - truncate the image size when bitmap data ends
- prematurely. This fixes CVE-2016-8686, where Potrace appeared to
- be "hanging" on a crafted input file.
- (2017/02/14) PS1 - test suite: added tests for plain pnm files.
- (2017/01/08) PS1 - fixed potential compiler issues due to signed
- arithmetic overflow and arithmetic shifting.
- (2017/01/07) PS1 - enable use of negative dy in bitmap data.
- (2017/01/07) PS1 - test suite: moved data files to a subdirectory.
- (2017/01/07) PS1 - test suite: added a check for -i flag.
- (2017/01/07) PS1 - fixed buffer overflow CVE-2016-8685, reported
- by Agostino Sarubbo.
- (2015/10/24) PS1 - portability: use const char * for string
- constants, required by C++11. Reported by Martin Gieseking.
- (2015/10/24) PS1 - portability: extra spaces around string macros,
- required by C++11. Reported by Martin Gieseking.
- (2015/10/24) PS1 - portability: added more potential C compilers
- to autoconf. Suggested by Nelson Beebe.
-
-v1.13 2015/10/22
- (2015/07/18) PS1 - fixed heap overflows, null pointer dereference
- bugs and a memory leak. Reported by Agostino Sarubbo.
- (2015/05/17) PS1 - man page: show which backends are dimension
- based, and state more clearly that svg backend defaults to 72dpi.
- (2015/04/11) PS1 - portability: ssize_t not supported on some
- systems; use ptrdiff_t instead. Reported by Martin Gieseking.
- (2015/03/28) PS1 - portability: added missing #includes for c99,
- reported by Nelson Beebe.
- (2015/03/27) PS1 - include config.h before other header files,
- reported by Peter Breitenlohner.
- (2015/03/26) PS1 - fixed division by zero bug triggered by bitmap
- of dimension 1x0. Reported by Tomasz Buchert.
-
-v1.12 2015/03/24
- (2015/03/20) PS1 - fixed memory overflow bug triggered by very
- large bitmaps. Fixes RedHat bug #955808 reported by Vincent Danen
- and Debian bug #778646 reported by Moritz Muehlenhoff.
- (2014/09/06) PS1 - test suite: added binary-check, to check that
- files are written in binary mode. Mostly relevant on Windows.
- (2014/09/06) PS1 - portability: fixed potential binary file mode
- bug on MinGW64.
- (2014/03/30) PS1 - man pages: fixed leading blank page with
- groff -man -Tps.
- (2013/12/29) PS1 - portability: made regular expressions in test
- suite POSIX compliant, reported by Ben Bullock.
- (2013/05/14) PS1 - distribution: removed libtool from distribution.
-
-v1.11 2013/02/19
- (2013/02/10) PS1 - bitops.c: added "cc" as a clobbered register.
- (2012/09/13) PS1 - GeoJSON backend: -u option affects rounding,
- not scaling.
- (2012/09/12) CH1 - added GeoJSON backend.
- (2012/03/04) PS1 - minor change in behavior of alphamax parameter:
- make a corner if alpha >= alphamax (instead of >). This makes
- little practical difference, except when alphamax = 0, in which
- case we now get a polygon. Fixes bug #3495854, reported by
- scribbleink.
- (2012/02/24) PS1 - added support for BMP format with bitfields.
-
-v1.10 2011/08/19
- (2011/08/07) PS1 - added --tight option
- (2011/08/05) PS1 - backends: simplified dimension calculations
- (2011/08/05) PS1 - eps backend: prevent integer overflow in
- bounding box.
- (2011/08/05) PS1 - disallow resolution of 0 dpi.
- (2011/08/05) PS1 - man page: added BACKEND TYPES section
- (2011/08/05) PS1 - fixed default scaling at 72dpi for
- variable-sized backends
- (2011/08/02) PS1 - new gimppath backend produces SVG output
- suitable for current versions of Gimp.
- (2011/08/02) PS1 - added a --flat option for the SVG backend.
- (2011/07/31) PS1 - test suite: renamed *.out files to prevent
- make's built-in implicit rules from accidentally overwriting them.
- (2011/07/26) PS1 - added DXF backend. Thanks to Jonas Benedett
- Dorr for testing.
- (2011/07/26) PS1 - use high resolution bounding box in EPS, PDF,
- and SVG backends
- (2011/05/13) PS1 - autoconf: CADD can now be given at compile time
-
-v1.9 2010/12/21
- (2010/12/20) PS1 - getopt.h: fixed compiler warnings
- (2010/12/20) PS1 - added --tty option to specify progress bar
- rendering at runtime.
- (2010/12/20) PS1 - added simplified progress bar for Windows or
- other dumb terminals. New --enable-dumb-tty configuration option.
- (2010/12/16) PS1 - test suite: fixed bug where a failed test was
- not reported in backend-check.sh
- (2010/12/15) PS1 - test suite: support for $EXEEXT
- (2010/12/15) PS1 - optimized penalty3 inner loop, 4.6% speedup.
- (2010/12/15) PS1 - autoconf: new CADD variable to add to CFLAGS
- (2010/12/15) PS1 - fixed some compiler warnings, added some error
- handlers, and added some cosmetic top-level free's.
- (2010/11/25) PS1 - added support for some BMP version 4 and 5
- files, and for top-down BMP files. Suggested by Kanwar Sangwan.
- (2010/11/13) PS1 - don't enter filter mode if -- is used
- (2010/11/09) PS1 - greymap.h, bitmap.h: drop unneeded dependencies
- (2010/09/07) PS1 - autoconf: fixed getopt_long test to allow
- cross-compiling, bug #3061403, reported by Igor Filippov.
- (2010/08/31) PS1 - test suite: added environment variables
- CHECK_POTRACE and CHECK_MKBITMAP to allow binaries outside the
- build tree to be tested
- (2010/08/09) PS1 - autoconf: converted to libtool
- (2010/08/05) PS1 - autoconf: renamed configure.in as configure.ac
- (2010/08/05) PS1 - autoconf: added --with-libpotrace to optionally
- install the Potrace library and header files.
- (2009/08/03) PS1 - portability: c++ wrapper in potracelib.h,
- suggested by Peter Jankuliak.
- (2009/05/13) PS1 - added pdfpage backend for fixed pagesize PDF
- output.
- (2009/04/07) PS1 - decompose.c: minor optimization
- (2008/10/08) PS1 - mkbitmap: speed increase by 8% to 26% by
- eliminating unnecessary bounds checks and interpolation.
- (2008/10/05) PS1 - trace.c: separate function for path reversal
- (2008/10/03) PS1 - progress.h: do the right thing if progress ==
- NULL
- (2008/10/03) PS1 - moved detrand() to auxiliary.h
- (2008/08/21) PS1 - mkbitmap: added --blur option.
- (2008/08/12) PS1 - combined the old -V option with -v.
- (2008/08/12) PS1 - test suite: adjusted tolerances to fix bug
- #1745456
- (2007/12/31) PS1 - include curve.h where path_t is used
- (2007/12/28) PS1 - flush stderr when interleaved with stdout
- (2007/12/28) PS1 - portability: don't hardcode size of short int
- (2007/11/09) PS1 - eps backend: use save-restore to avoid
- polluting caller's dictionary and for page independence.
- (2007/05/22) PS1 - xfig backend: added depth to opaque components
- to avoid them floating to the background. Suggested by Rafael
- Laboissiere.
-
-v1.8 2007/04/09
- (2007/04/08) PS1 - portability: use 'test' instead of '[' in shell
- scripts.
- (2007/04/08) PS1 - test suite: run PDF checks as a separate test.
- (2007/04/06) PS1 - fixed logical expressions in flate.c
- (2007/02/19) PS1 - portability: replacements for inline and M_PI
- (2007/01/16) PS1 - test suite: added checks for rotation in
- PostScript, PDF, and PGM backends
- (2007/01/16) PS1 - pdf backend: added rotation
- (2007/01/16) PS1 - pdf backend: renamed shipcom() function
- (2007/01/14) PS1 - autoconf: check if getopt_long reorders its
- arguments.
- (2007/01/13) PS1 - made pseudo-random number generation
- thread-safe and much faster.
- (2006/12/20) PS1 - renamed some structures in lzw.c, main.h
- (2006/12/20) PS1 - portability: fixed some compiler issues for
- Amiga, reported by Andreas Kleinert.
- (2006/12/20) PS1 - main.c: changed some return types to void.
- (2006/08/14) PS1 - made curve.c:privcurve_free_members() static.
- (2005/12/22) PS1 - renamed README.win as README-WIN
- (2005/11/11) PS1 - portability: use binary file i/o in Cygwin.
- Suggested by Henry He.
- (2005/06/24) PS1 - potracelib: fixed allocation bug, reported by
- Jung Shin.
- (2005/06/23) PS1 - potracelib_demo.c: free resources properly.
- (2005/06/23) PS1 - initialize unused private state to 0.
- (2005/06/23) PS1 - decompose.c: improved memory allocation scheme.
- (2005/05/06) PS1 - added "alphacurve" field to private curve
- structure, so that backends that don't use the public interface
- (such as the EPS backend) can be warned of non-conforming curves.
-
-v1.7 2005/03/06
- (2005/03/05) PS1 - fixed progress bar subrange bug.
-
-v1.6 2005/02/27
- (2005/02/22) PS1 - added "epsilon" feature to progress bar.
- (2005/02/22) PS1 - documentation: changed potracelib documentation
- to TeX format.
- (2005/02/07) PS1 - tweaked progress bar
- (2005/01/24) PS1 - added --progress option to potrace frontend.
- (2005/01/24) PS1 - potracelib: added progress bar interface.
- (2005/01/23) PS1 - fixed overflow bug in fast summing code.
- (2005/01/23) PS1 - rewrote trace.c:bestpolygon(). This speeds up
- potrace by 20% on typical data and up to 60% in some bad cases.
- (2004/12/07) PS1 - documentation: added potracelib.txt
- (2004/12/07) PS1 - renamed aux.h as auxiliary.h, since aux is an
- invalid filename in Windows.
- (2004/12/06) PS1 - API: added default parameters
- (2004/12/06) PS1 - API: added potrace_state_t
- (2004/12/06) PS1 - API: added "const" qualifiers
- (2004/12/06) PS1 - removed conv and areac fields from privpath_t.
- (2004/12/06) PS1 - changed bounding box handling in decompose.c
- (2004/12/06) PS1 - split curve_t into public and private parts.
- (2004/12/06) PS1 - moved curve/path allocation to curve.c.
- (2004/12/06) PS1 - renamed a type in lzw.h.
- (2004/12/06) PS1 - renamed source files.
- (2004/12/04) PS1 - split path_t into public and private parts.
- (2004/12/03) PS1 - split core functionality from user interface.
- (2004/12/03) PS1 - moved parts of bitmap.h to potracelib.h. Split
- bitmap.c into bitmap.c and bitmap_io.c. Moved path decomposition
- auxiliary functions from bitmap.c to path.c.
- (2004/12/03) PS1 - converted some stray local functions to static
- (2004/12/01) PS1 - moved basic curve data type definitions to
- potracelib.h
- (2004/12/01) PS1 - collected some repeatedly used macros in aux.h
- (2004/12/01) PS1 - started to create API to potrace core
- functionality in potracelib.c and potracelib.h. Also added new
- libpotrace.a target.
- (2004/12/01) PS1 - made curve.c and path.c reentrant by removing
- global variable "info".
- (2004/11/28) PS1 - made a85* auxiliary functions static in
- flate.c.
- (2004/11/28) PS1 - pdf backend: removed arbitrary page limit.
- (2004/11/24) PS1 - pdf backend: replaced ftell() by explicit byte
- count to work correctly with stdout.
- (2004/11/24) PS1 - portability: use binary file i/o in MinGW.
- (2004/10/08) PS1 - minor cleanup in backend_pdf.c.
- (2004/09/21) PS1 - replace -O3 compilation default by -O2; inlined
- critical functions manually instead.
- (2004/09/18) PS1 - slightly optimized multiplications in
- curve.c:bezier(). Thanks to Thomas M.Ott for suggesting it.
- (2004/09/16) PS1 - list of backends in help message is now
- generated.
- (2004/09/16) PS1 - test suite: added test for pdf backend.
- (2004/09/14) PS1 - removed bits.c, renamed bits.h to bitops.h, and
- use static inline functions instead of macros.
- (2004/09/14) PS1 - test suite: adjusted tolerances.
- (2004/09/12) PS1 - mkbitmap: when reading plain pbm files, use
- colors 0 and 255, not 0 and 1.
- (2004/09/12) PS1 - potrace and mkbitmap: don't complain about
- "junk at the end of file" if the junk is whitespace and
- comments. Treat files which contain only whitespace and comments
- as empty.
- (2004/08/05) TA1 - added pdf backend.
-
-v1.5 2004/07/08
- (2004/07/08) PS1 - removed dependency on external "compress"
- program. Removed ztops.c, added lzw.c, bits.c.
- (2004/03/17) PS1 - don't leave temporary file /tmp/have_compress.*
- lying around.
- (2004/03/06) PS1 - fixed a type error in have_compress.c:28.
-
-v1.4 2004/03/06
- (2004/03/05) PS1 - removed the compile-time check for the
- "compress" program and replaced it by a run-time check.
- (2004/03/03) PS1 - ztops.c: fixed compression bug where garbage
- was added after the end of stream.
- (2004/02/09) PS1 - further optimized the speed of the function
- path.c:pathlist_to_tree, which now takes less than 0.1% of total
- running time.
- (2004/02/09) PS1 - distribution: removed potrace.{ps,pdf} from
- distribution, changed textfiles to DOS mode in Cygwin distribution
- (2004/01/19) PS1 - corrected a bug in 1.2 which caused an enormous
- slowdown in the function path.c:pathlist_to_tree.
- (2004/01/17) PS1 - test suite: better quoting in shell scripts to
- be more robust against spaces in filenames etc.
- (2004/01/17) PS1 - test suite and ztops.c: respect TEMPDIR
- environment variable, if set.
-
-v1.3 2004/01/15
- (2004/01/14) PS1 - test suite: adjusted tolerances.
- (2004/01/13) PS1 - when reading a bitmap of width or height 0,
- pretend the offending dimension is 1. This is not 100% logical
- in all cases, but better than producing garbage.
- (2004/01/13) PS1 - fixed bounding box in xfig backend.
- (2004/01/13) PS1 - added missing gsave/grestore to ps backend.
- (2004/01/07) PS1 - autoconf: search for zlib.h in
- ${prefix}/include and for libz.so in ${prefix}/lib, in case they
- are not found elsewhere.
- (2004/01/07) PS1 - eliminated some unused variables.
- (2004/01/07) PS1 - portability: eliminated typeof() from
- mkbitmap.c
- (2004/01/07) PS1 - test suite: added a test for empty bitmaps.
- (2003/12/25) PS1 - fixed bug #866223: potrace crashes when applied
- to an empty bitmap.
- (2003/12/25) PS1 - when options -2 or -3 are unsupported, ignore
- them rather than failing, for improved compatibility.
- (2003/12/25) PS1 - autoconf: added --disable-zlib configuration
- option and improved error messages for missing zlib.h or libz.so
- (2003/12/25) PS1 - portability: eliminated dynamic arrays in
- mkbitmap.c
- (2003/12/25) PS1 - test suite: added a check for mkbitmap.
- (2003/12/25) PS1 - test suite: more portable filesize checking in
- backend-check.sh
-
-v1.2 2003/12/23
- (2003/12/23) PS1 - added an xfig backend.
- (2003/12/23) PS1 - added --group option to group related shapes
- together in SVG backend.
- (2003/12/23) PS1 - added --opaque option to paint white shapes
- opaquely, instead of leaving them transparent, in PS/EPS and SVG
- backends.
- (2003/12/23) PS1 - rewrote path decomposition algorithm to
- calculate path containment tree, to be used for grouping.
- (2003/12/23) PS1 - test suite: added a check of postscript output
- using ghostscript.
- (2003/09/18) PS1 - autoconf: added tests for -lm and -lz
- libraries, and for zlib.h header file.
- (2003/09/18) PS1 - portability: cleaned up code so that it can be
- compiled with a C++ compiler.
- (2003/09/17) PS1 - code cleanup in main.c:main().
- (2003/09/17) PS1 - added mkbitmap program.
- (2003/09/17) PS1 - added -ffloat-store compiler flag for improved
- floating point predictability.
- (2003/09/12) PS1 - test suite: added test for BMP runlength
- encoding.
- (2003/09/12) PS1 - fixed frontend for BMP runlength encoding.
- (2003/09/11) PS1 - autoconf: added test to work around gcc
- compiler bug 12243, which affected curve.c:adjust_vertices().
- (2003/09/11) PS1 - renamed pbm.c as bitmap.c, pgm.c as greymap.c
- (2003/09/11) PS1 - moved some bitmap details from path.c to pbm.c
- (2003/09/10) PS1 - renamed pbm.h macros to start with BM_
- (2003/09/02) PS1 - portability: added missing fallback value for
- M_PI to backend_pgm.c.
- (2003/08/28) PS1 - specialized matrix solving code for n=2.
- (2003/08/28) PS1 - portability (and scalability): eliminated
- dynamic arrays.
- (2003/08/28) PS1 - portability: replaced vsnprintf by vsprintf.
- (2003/08/28) PS1 - portability: provided fallback value for M_PI
- (2003/08/27) PS1 - autoconf: now checks whether the compress
- program works, not just whether it exists.
- (2003/08/27) PS1 - test suite: wrote three tests for "make check"
- (2003/08/27) PS1 - portability: fixed some floating point errors
- on DEC Alpha: division by zero and log of zero.
- (2003/08/27) PS1 - changed bitmap representation to take advantage
- of 64-bit architectures.
- (2003/08/27) PS1 - changed default scaling in ps and eps modes for
- small page sizes.
- (2003/08/26) PS1 - allow arguments of command line options -b, -z,
- -P to be abbreviated by "unambiguous prefix".
- (2003/08/26) PS1 - added rotation to gimppath backend.
- (2003/08/24) PS1 - portability: removed GNU extensions from printf
- format strings in backend_eps.
- (2003/08/22) PS1 - converted --unit to double value.
- (2003/08/22) PS1 - added experimental gimppath backend.
- (2003/08/20) PS1 - close paths in postscript/eps backend.
- (2003/08/20) PS1 - fixed bug in parsing command line options: long
- options --cleartext, --level2, --level3 did not work properly.
- Thanks to George Williams for reporting this bug.
-
-v1.1 2003/08/18
- (2003/08/17) PS1 - replaced calc_lon algorithm by a faster
- implementation. This results in speedups of up to factor 3.3 for
- certain large input files.
- (2003/08/17) PS1 - added --invert option.
- (2003/08/17) PS1 - improved error messages on wrong file format.
- (2003/08/17) PS1 - code cleanup to build under fussier compilers.
- Thanks to Nelson Beebe for submitting compiler logs for a large
- number of setups.
- (2003/08/17) PS1 - renamed curve.c:quad as quadform to avoid name
- clash on IBM AIX, Compaq/DEC ODF/1.
- (2003/08/17) PS1 - autoconf: let user override CFLAGS at configure
- time, and use -Wall and -O3 only for gcc compiler
- (2003/08/16) PS1 - added --blacklevel option to control
- image-to-bitmap conversion
- (2003/08/16) PS1 - added ability to read BMP files. Changed error
- reporting in case of empty files, or if there is junk at the end
- of a file in multipage mode.
- (2003/08/14) PS1 - as a convenience, now also read files in PGM
- and PPM format and convert to bitmap by simple threshold method.
- This is because many programs, including the Gimp and the *topnm
- tools, produce PNM output which must be further converted to PBM.
- (2003/08/14) PS1 - rearranged order of options in usage message.
- (2003/08/14) PS1 - implemented -d1 option for SVG backend. This
- outputs a jaggy bitmap with no smoothing.
- (2003/08/14) PS1 - autoconf: improved handling of
- --enable-compress
- (2003/08/14) PS1 - added SVG backend.
- (2003/08/14) PS1 - renamed old -s option as -S
- (2003/08/12) PS1 - added README.win
- (2003/08/12) PS1 - autoconf: fixed bug #787182: added non-standard
- compile time options to help message for ./configure script
-
-v1.0 2003/08/10
- (2003/08/10) PS1 - added file i/o code
- (2003/08/08) PS1 - optimized number of times the penalty3 function
- is called. Speedups of factor 2.7 were observed on large files.
- (2003/08/08) PS1 - added --opttolerance and --alphamax options.
- (2003/08/07) PS1 - autoconf: changed configure.in so that test for
- compress is omitted when the user overrides it - this prevents a
- wrong cached value to be read.
- (2003/08/07) PS1 - keep output flushed in postscript mode
- (2003/08/07) PS1 - fixed memory leak in multiple page mode
- (2003/08/06) PS1 - replaced --opticurve by --longcurve option;
- opticurve is now the default
- (2003/08/06) PS1 - added opticurve sensitivity to pgm backend
- (2003/08/06) PS1 - restricted opticurves to be bounded away from
- 180 degrees
- (2003/08/06) PS1 - allow margins and papersize to determine width
- if it is not defined by other means in postscript mode
- (2003/08/06) PS1 - added ability to read multiple bitmaps in
- postscript mode
- (2003/08/05) PS1 - new --longcoding option
- (2003/08/05) PS1 - new optimized eps backend which works with
- opticurve.
- (2003/07/31) PS1 - replaced O(n^3) calc_lon algorithm by a new
- O(n^2) algorithm. Observed speedups of factor 80.
- (2003/07/27) PS1 - added --opticurve option and integrated
- opticurve code in curve.c
- (2003/06/04) PS1 - made bm_to_pathlist a lot more efficient by
- scanning and clearing only bounding box of mask in inner scan.
- (2002/11/17) PS1 - changed bm_to_pathlist prototype to use
- explicit return value.
- (2002/10/09) PS1 - autoconf: added automake/autoconf scripts in
- preparation for public distribution.