Peter Wang 0d273769fc Add web browser-based term browsing in the debugger. ...

browser/browse.m:
    Add save_and_browse_browser_term_web to be called when
    "browse --web" is entered at the mdb prompt.

    Add browser_term_to_html_flat_string, a helper predicate for
    term_to_html.

    Make portray_flat_write_browser_term work take a stream parameter
    instead of writing to the current output stream. It is called by
    browser_term_to_html_flat_string, writing to a string builder
    stream.

browser/browser_info.m:
    Add web_browser_cmd field to browser_persistent_state.

browser/mdb.m:
browser/term_to_html.m:
    Add new module to generate an HTML document. The document contains a
    JavaScript represention of a Mercury term.

    (The JavaScript string escaping code is adapted from Julien's
    mercury-json project.)

browser/percent_encoding.m:
    Add new module to perform percent-encoding.

scripts/mdb_term_browser.css:
scripts/mdb_term_browser.js:
    Add JavaScript and CSS files referenced by the generated HTML file
    to create a tree view of a Mercury term using jstree.

scripts/32px.png:
scripts/40px.png:
scripts/throbber.gif:
scripts/jstree.min.js:
scripts/jstree.style.min.css:
    Add local copy of jstree files <https://www.jstree.com/>

scripts/jquery.slim.min.js:
    Add local copy of jquery <https://jquery.com/>

scripts/Mmakefile:
    Install the new files into the same directory as mdbrc and other
    mdb-related files.

trace/mercury_trace_browse.c:
trace/mercury_trace_browse.h:
trace/mercury_trace_cmd_browsing.c:
trace/mercury_trace_cmd_parameter.c:
trace/mercury_trace_cmd_parameter.h:
trace/mercury_trace_internal.c:
    Add "browse --web" and "web_browser_cmd" commands.

doc/user_guide.texi:
    Document "browse --web" and "web_browser_cmd" commands.

configure.ac:
scripts/mdbrc.in:
    Set a reasonable default command to launch a web browser from mdb.
    (Only tested on Linux.)

NEWS:
    Announce the new feature.

.README.in:
    Mention jquery and jstree licensing.

tests/debugger/Mmakefile:
tests/debugger/completion.exp:
tests/debugger/mdb_command_test.inp:
tests/debugger/save.exp2:
    Update debugger tests for new commands.

2017-08-15 16:14:55 +10:00

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