mirror of git://git.psyced.org/git/psyced
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
#include <net.h>
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#include <proto.h>
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// pike code can be made to run in lpc and the other way round..
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#include "jsonparser.pike"
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// see http://about.psyc.eu/Serialisation on the merits of JSON
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//
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// this function is useful if we decide to use json for complex data
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// (or rather cannot come up with something better)
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//
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string make_json(mixed d) {
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if (stringp(d)) {
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#if 1
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string *x;
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// this code runs on the presumption that the regexplode
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// will hardly ever encounter anything. should these chars
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// be commonplace, then the 7 regreplace approach would be
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// more efficient.
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x = regexplode(d, "(\"|\\\\|\n|\t|\b|\r|\f)");
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if (sizeof(x) > 1) {
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int i;
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for (i=sizeof(x)-2; i >= 0; i-=2) {
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switch(x[i]) {
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case "\"": x[i] = "\\\""; break; // common stuff
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case "\n": x[i] = "\\n"; break;
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case "\t": x[i] = "\\t"; break;
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case "\b": x[i] = "\\b"; break; // these chars should
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case "\r": x[i] = "\\r"; break; // not appear in psyc
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case "\f": x[i] = "\\f"; break; // strings anyway.. !?
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case "\\": x[i] = "\\\\"; break;
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default:
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raise_error(S("encountered %O in %O\n", x[i], d));
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}
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P4((" .. encountered %O", x[i]));
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}
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P4((" .. result: %O\n", d))
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}
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return "\""+ implode(x, "") +"\"";
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#else
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// what i don't like about this thing is 7 calls of regreplace
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// for every damn little string.
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d = regreplace(d, "\n", "\\n", 1);
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d = regreplace(d, "\t", "\\t", 1);
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d = regreplace(d, "\b", "\\b", 1);
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d = regreplace(d, "\r", "\\r", 1);
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d = regreplace(d, "\f", "\\f", 1);
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//d = regreplace(d, "\u", "\\u", 1); // unicode..???
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d = regreplace(d, "\"", "\\\"", 1);
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d = regreplace(d, "\\\\", "\\\\\\\\", 1);
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return "\""+ d +"\"";
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#endif
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} else if (intp(d)) {
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return to_string(d);
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} else if (pointerp(d)) {
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return "[ " + implode(map(d, #'make_json), ", ") + " ]";
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} else if (mappingp(d)) {
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#if 0
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return "{ " + implode(map(d,
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(: return $1 + " : " + make_json($2[0]); :)),
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", ") + " }";
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#else
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// mixed x = map(d,
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// (: return make_json($1) +" : "+ make_json($2); :));
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// let's presume a key of type string doesnt contain evil chars
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mixed x = map(d,
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(: return (stringp($1) ? ("\""+ $1 +"\"") : make_json($1))
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+":"+ make_json($2); :));
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P3(("\nintermediate: %O\n", m_values(x)))
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return "{"+ implode(m_values(x), ",") +"}";
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#endif
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} else if (objectp(d))
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return "\'"+ psyc_name(d) +"\'";
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return "00";
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}
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// see also net/place/storic.c for a JSON generator limited and optimized
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// to the output of HTML-quoted strings.
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