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/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
 * See LICENSE file for license details.
 */

#define TAGS \
const char *tags[] = { "1", "2", "3", "4", "5", "6", "7", "8", "9", NULL };

#define DEFMODE			dotile		/* dofloat */
#define FLOATSYMBOL		"><>"
#define TILESYMBOL		"[]="

#define BORDERPX		1
#define FONT			"-*-fixed-medium-r-normal-*-13-*-*-*-*-*-*-*"
#define NORMBORDERCOLOR		"#dddddd"
#define NORMBGCOLOR		"#eeeeee"
#define NORMFGCOLOR		"#222222"
#define SELBORDERCOLOR		"#ff0000"
#define SELBGCOLOR		"#006699"
#define SELFGCOLOR		"#ffffff"

#define MASTER			600		/* per thousand */
#define MODKEY			Mod1Mask
#define NMASTER			1		/* clients in master area */
#define SNAP			20		/* pixel */
#define TOPBAR			True		/* False */

#define KEYS \
static Key key[] = { \
	/* modifier			key		function	argument */ \
	{ MODKEY|ShiftMask,		XK_Return,	spawn,		{ .cmd = "exec xterm" } }, \
	{ MODKEY,			XK_Tab,		focusnext,	{ 0 } }, \
	{ MODKEY|ShiftMask,		XK_Tab,		focusprev,	{ 0 } }, \
	{ MODKEY,			XK_Return,	zoom,		{ 0 } }, \
	{ MODKEY,			XK_g,		resizemaster,	{ .i = 15 } }, \
	{ MODKEY,			XK_s,		resizemaster,	{ .i = -15 } }, \
	{ MODKEY,			XK_i,		incnmaster,	{ .i = 1 } }, \
	{ MODKEY,			XK_d,		incnmaster,	{ .i = -1 } }, \
	{ MODKEY|ShiftMask,		XK_0,		tag,		{ .i = -1 } }, \
	{ MODKEY|ShiftMask,		XK_1,		tag,		{ .i = 0 } }, \
	{ MODKEY|ShiftMask,		XK_2,		tag,		{ .i = 1 } }, \
	{ MODKEY|ShiftMask,		XK_3,		tag,		{ .i = 2 } }, \
	{ MODKEY|ShiftMask,		XK_4,		tag,		{ .i = 3 } }, \
	{ MODKEY|ShiftMask,		XK_5,		tag,		{ .i = 4 } }, \
	{ MODKEY|ShiftMask,		XK_6,		tag,		{ .i = 5 } }, \
	{ MODKEY|ShiftMask,		XK_7,		tag,		{ .i = 6 } }, \
	{ MODKEY|ShiftMask,		XK_8,		tag,		{ .i = 7 } }, \
	{ MODKEY|ShiftMask,		XK_9,		tag,		{ .i = 8 } }, \
	{ MODKEY|ControlMask|ShiftMask,	XK_1,		toggletag,	{ .i = 0 } }, \
	{ MODKEY|ControlMask|ShiftMask,	XK_2,		toggletag,	{ .i = 1 } }, \
	{ MODKEY|ControlMask|ShiftMask,	XK_3,		toggletag,	{ .i = 2 } }, \
	{ MODKEY|ControlMask|ShiftMask,	XK_4,		toggletag,	{ .i = 3 } }, \
	{ MODKEY|ControlMask|ShiftMask,	XK_5,		toggletag,	{ .i = 4 } }, \
	{ MODKEY|ControlMask|ShiftMask,	XK_6,		toggletag,	{ .i = 5 } }, \
	{ MODKEY|ControlMask|ShiftMask,	XK_7,		toggletag,	{ .i = 6 } }, \
	{ MODKEY|ControlMask|ShiftMask,	XK_8,		toggletag,	{ .i = 7 } }, \
	{ MODKEY|ControlMask|ShiftMask,	XK_9,		toggletag,	{ .i = 8 } }, \
	{ MODKEY|ShiftMask,		XK_c,		killclient,	{ 0 } }, \
	{ MODKEY,			XK_space,	togglemode,	{ 0 } }, \
	{ MODKEY|ShiftMask,		XK_space,	togglefloat,	{ 0 } }, \
	{ MODKEY,			XK_0,		view,		{ .i = -1 } }, \
	{ MODKEY,			XK_1,		view,		{ .i = 0 } }, \
	{ MODKEY,			XK_2,		view,		{ .i = 1 } }, \
	{ MODKEY,			XK_3,		view,		{ .i = 2 } }, \
	{ MODKEY,			XK_4,		view,		{ .i = 3 } }, \
	{ MODKEY,			XK_5,		view,		{ .i = 4 } }, \
	{ MODKEY,			XK_6,		view,		{ .i = 5 } }, \
	{ MODKEY,			XK_7,		view,		{ .i = 6 } }, \
	{ MODKEY,			XK_8,		view,		{ .i = 7 } }, \
	{ MODKEY,			XK_9,		view,		{ .i = 8 } }, \
	{ MODKEY|ControlMask,		XK_1,		toggleview,	{ .i = 0 } }, \
	{ MODKEY|ControlMask,		XK_2,		toggleview,	{ .i = 1 } }, \
	{ MODKEY|ControlMask,		XK_3,		toggleview,	{ .i = 2 } }, \
	{ MODKEY|ControlMask,		XK_4,		toggleview,	{ .i = 3 } }, \
	{ MODKEY|ControlMask,		XK_5,		toggleview,	{ .i = 4 } }, \
	{ MODKEY|ControlMask,		XK_6,		toggleview,	{ .i = 5 } }, \
	{ MODKEY|ControlMask,		XK_7,		toggleview,	{ .i = 6 } }, \
	{ MODKEY|ControlMask,		XK_8,		toggleview,	{ .i = 7 } }, \
	{ MODKEY|ControlMask,		XK_9,		toggleview,	{ .i = 8 } }, \
	{ MODKEY|ShiftMask,		XK_q,		quit,		{ 0 } }, \
};

/* Query class:instance:title for regex matching info with following command:
 * xprop | awk -F '"' '/^WM_CLASS/ { printf("%s:%s:",$4,$2) }; /^WM_NAME/ { printf("%s\n",$2) }' */
#define RULES \
static Rule rule[] = { \
	/* class:instance:title regex	tags regex	isfloat */ \
	{ "Gimp",			NULL,		True }, \
	{ "MPlayer",			NULL,		True }, \
	{ "Acroread",			NULL,		True }, \
};
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<pre id='vimCodeElement'>
<span class="Comment">//: Clean syntax to manipulate and check the file system in scenarios.</span>
<span class="Comment">//: Instructions 'assume-filesystem' and 'filesystem-should-contain' implicitly create</span>
<span class="Comment">//: a variable called 'filesystem' that is accessible to later instructions in</span>
<span class="Comment">//: the scenario. 'filesystem-should-contain' can check unicode characters in</span>
<span class="Comment">//: the fake filesystem</span>

<span class="Delimiter">:(scenarios run_mu_scenario)</span>
<span class="Delimiter">:(scenario simple_filesystem)</span>
scenario assume-filesystem [
  local-scope
  assume-filesystem [
    <span class="Comment"># file 'a' containing two lines of data</span>
    [a]<span class="Special"> &lt;- </span>[
      |a bc|
      |de f|
    ]
    <span class="Comment"># directory 'b' containing two files, 'c' and 'd'</span>
    [b/c]<span class="Special"> &lt;- </span>[]
    [b/d]<span class="Special"> &lt;- </span>[
      |xyz|
    ]
  ]
  <span class="Normal">data</span>:address:array:file-mapping<span class="Special"> &lt;- </span>get *filesystem:address:filesystem<span class="Delimiter">,</span> data:offset
  <span class="Normal">file1</span>:file-mapping<span class="Special"> &lt;- </span>index *data<span class="Delimiter">,</span> <span class="Constant">0</span>
  file1-name:address:array:character<span class="Special"> &lt;- </span>get file1<span class="Delimiter">,</span> name:offset
  <span class="Constant">10</span>:array:character/<span class="Special">raw &lt;- </span>copy *file1-name
  file1-contents:address:array:character<span class="Special"> &lt;- </span>get file1<span class="Delimiter">,</span> contents:offset
  <span class="Constant">100</span>:array:character/<span class="Special">raw &lt;- </span>copy *file1-contents
  <span class="Normal">file2</span>:file-mapping<span class="Special"> &lt;- </span>index *data<span class="Delimiter">,</span> <span class="Constant">1</span>
  file2-name:address:array:character<span class="Special"> &lt;- </span>get file2<span class="Delimiter">,</span> name:offset
  <span class="Constant">30</span>:array:character/<span class="Special">raw &lt;- </span>copy *file2-name
  file2-contents:address:array:character<span class="Special"> &lt;- </span>get file2<span class="Delimiter">,</span> contents:offset
  <span class="Constant">40</span>:array:character/<span class="Special">raw &lt;- </span>copy *file2-contents
  <span class="Normal">file3</span>:file-mapping<span class="Special"> &lt;- </span>index *data<span class="Delimiter">,</span> <span class="Constant">2</span>
  file3-name:address:array:character<span class="Special"> &lt;- </span>get file3<span class="Delimiter">,</span> name:offset
  <span class="Constant">50</span>:array:character/<span class="Special">raw &lt;- </span>copy *file3-name
  file3-contents:address:array:character<span class="Special"> &lt;- </span>get file3<span class="Delimiter">,</span> contents:offset
  <span class="Constant">60</span>:array:character/<span class="Special">raw &lt;- </span>copy *file3-contents
  memory-should-contain [
    <span class="Constant">10</span>:array:character<span class="Special"> &lt;- </span>[a]
    <span class="Constant">100</span>:array:character<span class="Special"> &lt;- </span>[a bc
de f
]
    <span class="Constant">30</span>:array:character<span class="Special"> &lt;- </span>[b/c]
    <span class="Constant">40</span>:array:character<span class="Special"> &lt;- </span>[]
    <span class="Constant">50</span>:array:character<span class="Special"> &lt;- </span>[b/d]
    <span class="Constant">60</span>:array:character<span class="Special"> &lt;- </span>[xyz
]
  ]
]

<span class="Delimiter">:(scenario escaping_file_contents)</span>
scenario assume-filesystem [
  local-scope
  assume-filesystem [
    <span class="Comment"># file 'a' containing a '|'</span>
    <span class="Comment"># need to escape '\' once for each block</span>
    [a]<span class="Special"> &lt;- </span>[
      |x\\\\|yz|
    ]
  ]
  <span class="Normal">data</span>:address:array:file-mapping<span class="Special"> &lt;- </span>get *filesystem:address:filesystem<span class="Delimiter">,</span> data:offset
  <span class="Normal">file1</span>:file-mapping<span class="Special"> &lt;- </span>index *data<span class="Delimiter">,</span> <span class="Constant">0</span>
  file1-name:address:array:character<span class="Special"> &lt;- </span>get file1<span class="Delimiter">,</span> name:offset
  <span class="Constant">10</span>:array:character/<span class="Special">raw &lt;- </span>copy *file1-name
  file1-contents:address:array:character<span class="Special"> &lt;- </span>get file1<span class="Delimiter">,</span> contents:offset
  <span class="Constant">20</span>:array:character/<span class="Special">raw &lt;- </span>copy *file1-contents
  memory-should-contain [
    <span class="Constant">10</span>:array:character<span class="Special"> &lt;- </span>[a]
    <span class="Constant">20</span>:array:character<span class="Special"> &lt;- </span>[x|yz
]
  ]
]

<span class="Delimiter">:(before &quot;End Globals&quot;)</span>
<span class="Normal">extern</span> <span class="Normal">const</span> <span class="Normal">int</span> FILESYSTEM = Next_predefined_global_for_scenarios++<span class="Delimiter">;</span>
<span class="Comment">//: give 'filesystem' a fixed location in scenarios</span>
<span class="Delimiter">:(before &quot;End Special Scenario Variable Names(r)&quot;)</span>
Name[r][<span class="Constant">&quot;filesystem&quot;</span>] = FILESYSTEM<span class="Delimiter">;</span>
<span class="Comment">//: make 'filesystem' always a raw location in scenarios</span>
<span class="Delimiter">:(before &quot;End is_special_name Cases&quot;)</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>s == <span class="Constant">&quot;filesystem&quot;</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>

<span class="Delimiter">:(before &quot;End initialize_transform_rewrite_literal_string_to_text()&quot;)</span>
recipes_taking_literal_strings<span class="Delimiter">.</span>insert<span class="Delimiter">(</span><span class="Constant">&quot;assume-filesystem&quot;</span><span class="Delimiter">);</span>

<span class="Comment">//: screen-should-contain is a regular instruction</span>
<span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
ASSUME_FILESYSTEM<span class="Delimiter">,</span>
<span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;assume-filesystem&quot;</span><span class="Delimiter">,</span> ASSUME_FILESYSTEM<span class="Delimiter">);</span>
<span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
<span class="Normal">case</span> ASSUME_FILESYSTEM: <span class="Delimiter">{</span>
  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
<span class="Normal">case</span> ASSUME_FILESYSTEM: <span class="Delimiter">{</span>
  assert<span class="Delimiter">(</span>scalar<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)));</span>
  assume_filesystem<span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name<span class="Delimiter">,</span> current_recipe_name<span class="Delimiter">());</span>
  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>

<span class="Delimiter">:(code)</span>
<span class="Normal">void</span> assume_filesystem<span class="Delimiter">(</span><span class="Normal">const</span> string&amp; data<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; caller<span class="Delimiter">)</span> <span class="Delimiter">{</span>
  map&lt;string<span class="Delimiter">,</span> string&gt; contents<span class="Delimiter">;</span>
  parse_filesystem<span class="Delimiter">(</span>data<span class="Delimiter">,</span> contents<span class="Delimiter">,</span> caller<span class="Delimiter">);</span>
  construct_filesystem_object<span class="Delimiter">(</span>contents<span class="Delimiter">);</span>
<span class="Delimiter">}</span>

<span class="Normal">void</span> parse_filesystem<span class="Delimiter">(</span><span class="Normal">const</span> string&amp; data<span class="Delimiter">,</span> map&lt;string<span class="Delimiter">,</span> string&gt;&amp; out<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; caller<span class="Delimiter">)</span> <span class="Delimiter">{</span>
  istringstream in<span class="Delimiter">(</span>data<span class="Delimiter">);</span>
  in &gt;&gt; std::noskipws<span class="Delimiter">;</span>
  <span class="Normal">while</span> <span class="Delimiter">(</span><span class="Constant">true</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
    skip_whitespace_and_comments<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
    string filename = next_filesystem_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>*filename<span class="Delimiter">.</span>begin<span class="Delimiter">()</span> != <span class="Constant">'['</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
      raise &lt;&lt; caller &lt;&lt; <span class="Constant">&quot;: assume-filesystem: filename '&quot;</span> &lt;&lt; filename &lt;&lt; <span class="Constant">&quot;' must begin with a '['</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
      <span class="Identifier">break</span><span class="Delimiter">;</span>
    <span class="Delimiter">}</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>*filename<span class="Delimiter">.</span>rbegin<span class="Delimiter">()</span> != <span class="Constant">']'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
      raise &lt;&lt; caller &lt;&lt; <span class="Constant">&quot;: assume-filesystem: filename '&quot;</span> &lt;&lt; filename &lt;&lt; <span class="Constant">&quot;' must end with a ']'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
      <span class="Identifier">break</span><span class="Delimiter">;</span>
    <span class="Delimiter">}</span>
    filename<span class="Delimiter">.</span>erase<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">);</span>
    filename<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>filename<span class="Delimiter">)</span>-<span class="Constant">1</span><span class="Delimiter">);</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Delimiter">{</span>
      raise &lt;&lt; caller &lt;&lt; <span class="Constant">&quot;: assume-filesystem: no data for filename '&quot;</span> &lt;&lt; filename &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
      <span class="Identifier">break</span><span class="Delimiter">;</span>
    <span class="Delimiter">}</span>
    string arrow = next_filesystem_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>arrow != <span class="Constant">&quot;&lt;-&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
      raise &lt;&lt; caller &lt;&lt; <span class="Constant">&quot;: assume-filesystem: expected '&lt;-' after filename '&quot;</span> &lt;&lt; filename &lt;&lt; <span class="Constant">&quot;' but got '&quot;</span> &lt;&lt; arrow &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
      <span class="Identifier">break</span><span class="Delimiter">;</span>
    <span class="Delimiter">}</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Delimiter">{</span>
      raise &lt;&lt; caller &lt;&lt; <span class="Constant">&quot;: assume-filesystem: no data for filename '&quot;</span> &lt;&lt; filename &lt;&lt; <span class="Constant">&quot;' after '&lt;-'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
      <span class="Identifier">break</span><span class="Delimiter">;</span>
    <span class="Delimiter">}</span>
    string contents = next_filesystem_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>*contents<span class="Delimiter">.</span>begin<span class="Delimiter">()</span> != <span class="Constant">'['</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
      raise &lt;&lt; caller &lt;&lt; <span class="Constant">&quot;: assume-filesystem: file contents '&quot;</span> &lt;&lt; contents &lt;&lt; <span class="Constant">&quot;' for filename '&quot;</span> &lt;&lt; filename &lt;&lt; <span class="Constant">&quot;' must begin with a '['</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
      <span class="Identifier">break</span><span class="Delimiter">;</span>
    <span class="Delimiter">}</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>*contents<span class="Delimiter">.</span>rbegin<span class="Delimiter">()</span> != <span class="Constant">']'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
      raise &lt;&lt; caller &lt;&lt; <span class="Constant">&quot;: assume-filesystem: file contents '&quot;</span> &lt;&lt; contents &lt;&lt; <span class="Constant">&quot;' for filename '&quot;</span> &lt;&lt; filename &lt;&lt; <span class="Constant">&quot;' must end with a ']'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
      <span class="Identifier">break</span><span class="Delimiter">;</span>
    <span class="Delimiter">}</span>
    contents<span class="Delimiter">.</span>erase<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">);</span>
    contents<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>contents<span class="Delimiter">)</span>-<span class="Constant">1</span><span class="Delimiter">);</span>
    put<span class="Delimiter">(</span>out<span class="Delimiter">,</span> filename<span class="Delimiter">,</span> munge_filesystem_contents<span class="Delimiter">(</span>contents<span class="Delimiter">,</span> filename<span class="Delimiter">,</span> caller<span class="Delimiter">));</span>
  <span class="Delimiter">}</span>
<span class="Delimiter">}</span>

string munge_filesystem_contents<span class="Delimiter">(</span><span class="Normal">const</span> string&amp; data<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; filename<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; caller<span class="Delimiter">)</span> <span class="Delimiter">{</span>
  <span class="Normal">if</span> <span class="Delimiter">(</span>data<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span> <span class="Constant">&quot;&quot;</span><span class="Delimiter">;</span>
  istringstream in<span class="Delimiter">(</span>data<span class="Delimiter">);</span>
  in &gt;&gt; std::noskipws<span class="Delimiter">;</span>
  skip_whitespace_and_comments<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
  ostringstream out<span class="Delimiter">;</span>
  <span class="Normal">while</span> <span class="Delimiter">(</span><span class="Constant">true</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
    skip_whitespace<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> != <span class="Constant">'|'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
      raise &lt;&lt; caller &lt;&lt; <span class="Constant">&quot;: assume-filesystem: file contents for filename '&quot;</span> &lt;&lt; filename &lt;&lt; <span class="Constant">&quot;' must be delimited in '|'s</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
      <span class="Identifier">break</span><span class="Delimiter">;</span>
    <span class="Delimiter">}</span>
    in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>  <span class="Comment">// skip leading '|'</span>
    string line<span class="Delimiter">;</span>
    getline<span class="Delimiter">(</span>in<span class="Delimiter">,</span> line<span class="Delimiter">);</span>
    <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>line<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
      <span class="Normal">if</span> <span class="Delimiter">(</span>line<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)</span> == <span class="Constant">'|'</span><span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
      <span class="Normal">if</span> <span class="Delimiter">(</span>line<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)</span> == <span class="cSpecial">'\\'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
        ++i<span class="Delimiter">;</span>  <span class="Comment">// skip</span>
        <span class="Normal">if</span> <span class="Delimiter">(</span>i == SIZE<span class="Delimiter">(</span>line<span class="Delimiter">))</span> <span class="Delimiter">{</span>
          raise &lt;&lt; caller &lt;&lt; <span class="Constant">&quot;: assume-filesystem: file contents can't end a line with '</span><span class="cSpecial">\\</span><span class="Constant">'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
          <span class="Identifier">break</span><span class="Delimiter">;</span>
        <span class="Delimiter">}</span>
      <span class="Delimiter">}</span>
      out &lt;&lt; line<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
    <span class="Delimiter">}</span>
    <span class="Comment">// todo: some way to represent a file without a final newline</span>
    out &lt;&lt; <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
  <span class="Delimiter">}</span>
  <span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<span class="Delimiter">}</span>

<span class="Normal">void</span> construct_filesystem_object<span class="Delimiter">(</span><span class="Normal">const</span> map&lt;string<span class="Delimiter">,</span> string&gt;&amp; contents<span class="Delimiter">)</span> <span class="Delimiter">{</span>
  <span class="Normal">int</span> filesystem_data_address = allocate<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>contents<span class="Delimiter">)</span>*<span class="Constant">2</span> + <span class="Comment">/*</span><span class="Comment">array length</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">);</span>
  <span class="Normal">int</span> curr = filesystem_data_address + <span class="Comment">/*</span><span class="Comment">skip refcount and length</span><span class="Comment">*/</span><span class="Constant">2</span><span class="Delimiter">;</span>
  <span class="Normal">for</span> <span class="Delimiter">(</span>map&lt;string<span class="Delimiter">,</span> string&gt;::const_iterator p = contents<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != contents<span class="Delimiter">.</span>end<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
    put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">,</span> new_mu_string<span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>first<span class="Delimiter">));</span>
    trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing file name &quot;</span> &lt;&lt; get<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; in location &quot;</span> &lt;&lt; curr &lt;&lt; end<span class="Delimiter">();</span>
    put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">),</span> <span class="Constant">1</span><span class="Delimiter">);</span>
    trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing refcount 1 in location &quot;</span> &lt;&lt; get<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">)</span> &lt;&lt; end<span class="Delimiter">();</span>
    ++curr<span class="Delimiter">;</span>
    put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">,</span> new_mu_string<span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>second<span class="Delimiter">));</span>
    trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing file contents &quot;</span> &lt;&lt; get<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; in location &quot;</span> &lt;&lt; curr &lt;&lt; end<span class="Delimiter">();</span>
    put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">),</span> <span class="Constant">1</span><span class="Delimiter">);</span>
    trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing refcount 1 in location &quot;</span> &lt;&lt; get<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">)</span> &lt;&lt; end<span class="Delimiter">();</span>
    ++curr<span class="Delimiter">;</span>
  <span class="Delimiter">}</span>
  curr = filesystem_data_address+<span class="Comment">/*</span><span class="Comment">skip refcount</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span>
  put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">,</span> SIZE<span class="Delimiter">(</span>contents<span class="Delimiter">));</span>  <span class="Comment">// size of array</span>
  trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing filesystem size &quot;</span> &lt;&lt; get<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; in location &quot;</span> &lt;&lt; curr &lt;&lt; end<span class="Delimiter">();</span>
  put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> filesystem_data_address<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">);</span>  <span class="Comment">// initialize refcount</span>
  trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing refcount 1 in location &quot;</span> &lt;&lt; filesystem_data_address &lt;&lt; end<span class="Delimiter">();</span>
  <span class="Comment">// wrap the filesystem data in a filesystem object</span>
  <span class="Normal">int</span> filesystem_address = allocate<span class="Delimiter">(</span>size_of_filesystem<span class="Delimiter">());</span>
  curr = filesystem_address+<span class="Comment">/*</span><span class="Comment">skip refcount</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span>
  put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">,</span> filesystem_data_address<span class="Delimiter">);</span>
  trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing filesystem data address &quot;</span> &lt;&lt; filesystem_data_address &lt;&lt; <span class="Constant">&quot; in location &quot;</span> &lt;&lt; curr &lt;&lt; end<span class="Delimiter">();</span>
  put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> filesystem_address<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">);</span>  <span class="Comment">// initialize refcount</span>
  trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing refcount 1 in location &quot;</span> &lt;&lt; filesystem_address &lt;&lt; end<span class="Delimiter">();</span>
  <span class="Comment">// save in product</span>
  put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> FILESYSTEM<span class="Delimiter">,</span> filesystem_address<span class="Delimiter">);</span>
  trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing filesystem address &quot;</span> &lt;&lt; filesystem_address &lt;&lt; <span class="Constant">&quot; in location &quot;</span> &lt;&lt; FILESYSTEM &lt;&lt; end<span class="Delimiter">();</span>
<span class="Delimiter">}</span>

<span class="Normal">int</span> size_of_filesystem<span class="Delimiter">()</span> <span class="Delimiter">{</span>
  <span class="Comment">// memoize result if already computed</span>
  <span class="Normal">static</span> <span class="Normal">int</span> result = <span class="Constant">0</span><span class="Delimiter">;</span>
  <span class="Normal">if</span> <span class="Delimiter">(</span>result<span class="Delimiter">)</span> <span class="Identifier">return</span> result<span class="Delimiter">;</span>
  assert<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;filesystem&quot;</span><span class="Delimiter">));</span>
  type_tree* type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span><span class="Constant">&quot;filesystem&quot;</span><span class="Delimiter">);</span>
  result = size_of<span class="Delimiter">(</span>type<span class="Delimiter">)</span>+<span class="Comment">/*</span><span class="Comment">refcount</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span>
  <span class="Normal">delete</span> type<span class="Delimiter">;</span>
  <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>

string next_filesystem_word<span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
  skip_whitespace_and_comments<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
  <span class="Normal">if</span> <span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> == <span class="Constant">'['</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
    string result = slurp_quoted<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
    skip_whitespace_and_comments_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
    <span class="Identifier">return</span> result<span class="Delimiter">;</span>
  <span class="Delimiter">}</span>
  ostringstream out<span class="Delimiter">;</span>
  slurp_word<span class="Delimiter">(</span>in<span class="Delimiter">,</span> out<span class="Delimiter">);</span>
  skip_whitespace_and_comments<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
  <span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<span class="Delimiter">}</span>

<span class="Normal">void</span> skip_whitespace<span class="Delimiter">(</span>istream&amp; in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
  <span class="Normal">while</span> <span class="Delimiter">(</span><span class="Constant">true</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>isspace<span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()))</span> in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
    <span class="Normal">else</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
  <span class="Delimiter">}</span>
<span class="Delimiter">}</span>
</pre>
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