ref: 65e0e1c3e37c966d0c18178ad8a4c54c0c0fbce9
dir: /sys/src/libjson/printjson.c/
#include <u.h> #include <libc.h> #include <json.h> static int printjson(Fmt*, JSON*, int); static int printarray(Fmt*, JSON*, int); static int printobject(Fmt*, JSON*, int); static int printarray(Fmt *f, JSON *j, int indent) { JSONEl *jl; int i, r; if(j->first == nil){ return fmtprint(f, "[]"); } r = fmtprint(f, "[\n"); for(jl = j->first; jl != nil; jl = jl->next){ for(i = 0; i < indent; i++) r += fmtprint(f, "\t"); r += printjson(f, jl->val, indent); r += fmtprint(f, "%s\n", jl->next != nil ? "," : ""); } for(i = 0; i < indent-1; i++) r += fmtprint(f, "\t"); r += fmtprint(f, "]"); return r; } static int printobject(Fmt *f, JSON *j, int indent) { JSONEl *jl; int i, r; if(j->first == nil){ return fmtprint(f, "{}"); } r = fmtprint(f, "{\n"); for(jl = j->first; jl != nil; jl = jl->next){ for(i = 0; i < indent; i++) fmtprint(f, "\t"); r += fmtprint(f, "\"%s\": ", jl->name); r += printjson(f, jl->val, indent); r += fmtprint(f, "%s\n", jl->next != nil ? "," : ""); } for(i = 0; i < indent-1; i++) r += fmtprint(f, "\t"); r += fmtprint(f, "}"); return r; } static int printjson(Fmt *f, JSON *j, int indent) { switch(j->t){ case JSONNull: return fmtprint(f, "null"); break; case JSONBool: return fmtprint(f, "%s", j->n ? "true" : "false"); break; case JSONNumber: return fmtprint(f, "%f", j->n); break; case JSONString: return fmtprint(f, "\"%s\"", j->s); break; case JSONArray: return printarray(f, j, indent+1); break; case JSONObject: return printobject(f, j, indent+1); break; } return 0; } int JSONfmt(Fmt *f) { JSON *j; j = va_arg(f->args, JSON*); return printjson(f, j, 0); } void JSONfmtinstall(void) { fmtinstall('J', JSONfmt); }