Mercurial > hgrepos > Python2 > PyMuPDF

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>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
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1 Curl on Symbian OS
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2 ==================
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3 This is a basic port of curl and libcurl to Symbian OS. The port is
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4 a straightforward one using Symbian's P.I.P.S. POSIX compatibility
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5 layer, which was first available for OS version 9.1. A more complete
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6 port would involve writing a Symbian C++ binding, or wrapping libcurl
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7 as a Symbian application server with a C++ API to handle requests
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8 from client applications as well as creating a GUI application to allow
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9 file transfers. The author has no current plans to do so.
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10
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11 This means that integration with standard Symbian OS programs can be
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12 tricky, since libcurl isn't designed with Symbian's native asynchronous
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13 message passing idioms in mind. However, it may be possible to use libcurl
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14 in an active object-based application through libcurl's multi interface.
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15 The port is most easily used when porting POSIX applications to Symbian
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16 OS using P.I.P.S. (a.k.a. Open C).
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18 libcurl is built as a standard Symbian ordinal-linked DLL, and curl is
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19 built as a text mode EXE application. They have not been Symbian
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20 Signed, which is required in order to install them on most phones.
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21
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22 Following are some things to keep in mind when using this port.
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24
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25 curl notes
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26 ----------
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27 When starting curl in the Windows emulator from the Windows command-line,
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28 place a double-dash -- before the first curl command-line option.
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29 e.g. \epoc32\release\winscw\udeb\curl -- -v http://localhost/
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30 Failure to do so may mean that some of your options won't be correctly
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31 processed.
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32
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33 Symbian's ESHELL allows for redirecting stdin and stdout to files, but
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34 stderr goes to the epocwind.out file (on the emulator). The standard
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35 curl options -o, --stderr and --trace-ascii can be used to
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36 redirect output to a file (or stdout) instead.
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38 P.I.P.S. doesn't inherit the current working directory at startup from
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39 the shell, so relative path names are always relative to
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40 C:\Private\f0206442\.
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42 P.I.P.S. provides no way to disable echoing of characters as they are
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43 entered, so passwords typed in on the console will be visible. It also
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44 line buffers keyboard input so interactive telnet sessions are not very
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45 feasible.
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47 All screen output disappears after curl exits, so after a command completes,
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48 curl waits by default for Enter to be pressed before exiting. This behaviour
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49 is suppressed when the -s option is given.
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50
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51 curl's "home directory" in Symbian is C:\Private\f0206442\. The .curlrc file
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52 is read from this directory on startup.
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55 libcurl notes
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56 -------------
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57 libcurl uses writable static data, so the EPOCALLOWDLLDATA option is
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58 used in its MMP file, with the corresponding additional memory usage
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59 and limitations on the Windows emulator.
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61 curl_global_init() *must* be called (either explicitly or implicitly through
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62 calling certain other libcurl functions) before any libcurl functions
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63 that could allocate memory (like curl_getenv()).
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64
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65 P.I.P.S. doesn't support signals or the alarm() call, so some timeouts
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66 (such as the connect timeout) are not honoured. This should not be
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67 an issue once support for CURLRES_THREADED is added for Symbian.
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69 P.I.P.S. causes a USER:87 panic if certain timeouts much longer than
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70 half an hour are selected.
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72 LDAP, SCP or SFTP methods are not supported due to lack of support for
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73 the dependent libraries on Symbian.
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75 gzip and deflate decompression is supported when the appropriate macro
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76 is uncommented in the libcurl.mmp file.
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78 SSL/TLS encryption is not enabled by default, but it is possible to add
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79 when the OpenSSL libraries included in the S60 Open C SDK are available.
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80 The appropriate macro in the libcurl.mmp file must be uncommented to
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81 enable support.
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83 NTLM authentication may not work on some servers due to the lack of
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84 MD4 support in the OpenSSL libraries included with Open C.
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86 Debug builds are not supported (i.e. --enable-debug) because they cause
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87 additional symbol exports in the library which are not frozen in the .def
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88 files.
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91 Dan Fandrich
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92 dan@coneharvesters.com
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93 March 2010