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diff --git a/html/102persist.cc.html b/html/102persist.cc.html deleted file mode 100644 index 863546d2..00000000 --- a/html/102persist.cc.html +++ /dev/null @@ -1,154 +0,0 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> -<html> -<head> -<meta http-equiv="content-type" content="text/html; charset=UTF-8"> -<title>Mu - 102persist.cc</title> -<meta name="Generator" content="Vim/7.4"> -<meta name="plugin-version" content="vim7.4_v2"> -<meta name="syntax" content="cpp"> -<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> -<meta name="colorscheme" content="minimal"> -<style type="text/css"> -<!-- -pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } -body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color: #080808; } -* { font-size: 12pt; font-size: 1em; } -.Constant { color: #00a0a0; } -.Comment { color: #9090ff; } -.Delimiter { color: #800080; } -.cSpecial { color: #008000; } -.Identifier { color: #c0a020; } -.Normal { color: #eeeeee; background-color: #080808; padding-bottom: 1px; } ---> -</style> - -<script type='text/javascript'> -<!-- - ---> -</script> -</head> -<body> -<pre id='vimCodeElement'> -<span class="Comment">//: Dead simple persistence.</span> -<span class="Comment">//: 'restore' - reads string from a file</span> -<span class="Comment">//: 'save' - writes string to a file</span> - -<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span> -RESTORE<span class="Delimiter">,</span> -<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span> -put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"restore"</span><span class="Delimiter">,</span> RESTORE<span class="Delimiter">);</span> -<span class="Delimiter">:(before "End Primitive Recipe Checks")</span> -<span class="Normal">case</span> RESTORE: <span class="Delimiter">{</span> - <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> - raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'restore' requires exactly one ingredient, but got '"</span> << inst<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - string filename<span class="Delimiter">;</span> - <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal_text<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span> - <span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_text<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span> - <span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Normal">else</span> <span class="Delimiter">{</span> - raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"first ingredient of 'restore' should be a string, but got '"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> -<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span> -<span class="Normal">case</span> RESTORE: <span class="Delimiter">{</span> - string filename<span class="Delimiter">;</span> - <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal_text<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> <span class="Delimiter">{</span> - filename = 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> - <span class="Delimiter">}</span> - <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_text<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> <span class="Delimiter">{</span> - filename = read_mu_text<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">));</span> - <span class="Delimiter">}</span> - <span class="Normal">if</span> <span class="Delimiter">(</span>Current_scenario<span class="Delimiter">)</span> <span class="Delimiter">{</span> - <span class="Comment">// do nothing in tests</span> - products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span> - products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - string contents = slurp<span class="Delimiter">(</span><span class="Constant">"lesson/"</span>+filename<span class="Delimiter">);</span> - products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span> - <span class="Normal">if</span> <span class="Delimiter">(</span>contents<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> - products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span> - <span class="Normal">else</span> - products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>new_mu_text<span class="Delimiter">(</span>contents<span class="Delimiter">));</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> - -<span class="Delimiter">:(code)</span> -<span class="Comment">// <a href="http://cpp.indi.frih.net/blog/2014/09/how-to-read-an-entire-file-into-memory-in-cpp">http://cpp.indi.frih.net/blog/2014/09/how-to-read-an-entire-file-into-memory-in-cpp</a></span> -string slurp<span class="Delimiter">(</span><span class="Normal">const</span> string& filename<span class="Delimiter">)</span> <span class="Delimiter">{</span> - ifstream fin<span class="Delimiter">(</span>filename<span class="Delimiter">.</span>c_str<span class="Delimiter">());</span> - fin<span class="Delimiter">.</span>peek<span class="Delimiter">();</span> - <span class="Normal">if</span> <span class="Delimiter">(</span>!fin<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">""</span><span class="Delimiter">;</span> <span class="Comment">// don't bother checking errno</span> - ostringstream result<span class="Delimiter">;</span> - result << fin<span class="Delimiter">.</span>rdbuf<span class="Delimiter">();</span> - fin<span class="Delimiter">.</span>close<span class="Delimiter">();</span> - <span class="Identifier">return</span> result<span class="Delimiter">.</span>str<span class="Delimiter">();</span> -<span class="Delimiter">}</span> - -<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span> -SAVE<span class="Delimiter">,</span> -<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span> -put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"save"</span><span class="Delimiter">,</span> SAVE<span class="Delimiter">);</span> -<span class="Delimiter">:(before "End Primitive Recipe Checks")</span> -<span class="Normal">case</span> SAVE: <span class="Delimiter">{</span> - <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> - raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'save' requires exactly two ingredients, but got '"</span> << inst<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << 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>is_literal_text<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span> - <span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_text<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span> - <span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Normal">else</span> <span class="Delimiter">{</span> - raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"first ingredient of 'save' should be a string, but got '"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << 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>!is_mu_text<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span> - raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"second ingredient of 'save' should be an address:@:char, but got '"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">))</span> << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> -<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span> -<span class="Normal">case</span> SAVE: <span class="Delimiter">{</span> - <span class="Normal">if</span> <span class="Delimiter">(</span>Current_scenario<span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span> <span class="Comment">// do nothing in tests</span> - string filename<span class="Delimiter">;</span> - <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal_text<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> <span class="Delimiter">{</span> - filename = 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> - <span class="Delimiter">}</span> - <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_text<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> <span class="Delimiter">{</span> - filename = read_mu_text<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">));</span> - <span class="Delimiter">}</span> - ofstream fout<span class="Delimiter">((</span><span class="Constant">"lesson/"</span>+filename<span class="Delimiter">).</span>c_str<span class="Delimiter">());</span> - <span class="Normal">if</span> <span class="Delimiter">(</span>!fout<span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span> - string contents = read_mu_text<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">));</span> - fout << contents<span class="Delimiter">;</span> - fout<span class="Delimiter">.</span>close<span class="Delimiter">();</span> - <span class="Normal">if</span> <span class="Delimiter">(</span>!exists<span class="Delimiter">(</span><span class="Constant">"lesson/.git"</span><span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Comment">// bug in git: git diff -q messes up --exit-code</span> - <span class="Comment">// explicitly say '--all' for git 1.9</span> - <span class="Normal">int</span> status = system<span class="Delimiter">(</span><span class="Constant">"cd lesson; git add --all .; git diff HEAD --exit-code >/dev/null || git commit -a -m . >/dev/null"</span><span class="Delimiter">);</span> - <span class="Normal">if</span> <span class="Delimiter">(</span>status != <span class="Constant">0</span><span class="Delimiter">)</span> - raise << <span class="Constant">"error in commit: contents "</span> << contents << <span class="cSpecial">'\n'</span> << end<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">bool</span> exists<span class="Delimiter">(</span><span class="Normal">const</span> string& filename<span class="Delimiter">)</span> <span class="Delimiter">{</span> - <span class="Normal">struct</span> stat dummy<span class="Delimiter">;</span> - <span class="Identifier">return</span> <span class="Constant">0</span> == stat<span class="Delimiter">(</span>filename<span class="Delimiter">.</span>c_str<span class="Delimiter">(),</span> &dummy<span class="Delimiter">);</span> -<span class="Delimiter">}</span> -</pre> -</body> -</html> -<!-- vim: set foldmethod=manual : --> |