vndb/fu
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

json_format: Add html_safe option

Browse source
This commit is contained in:
Yorhel 2025-03-16 15:03:32 +01:00
parent 3fad7feec3
commit f8fe53cba9
3 changed files with 37 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

29
c/jsonfmt.c
View file

@ -3,6 +3,7 @@ typedef struct {
UV depth;
int canon;
int pretty; /* <0 when disabled, current nesting level otherwise */
int htmlsafe;
} fujson_fmt_ctx;
static void fujson_fmt(pTHX_ fujson_fmt_ctx *, SV *);
@ -27,21 +28,22 @@ static void fujson_fmt_str(pTHX_ fujson_fmt_ctx *ctx, const char *stri, size_t l
while (off < len) {
/* Fast path: no escaping needed */
loff = off;
#define SKIPUNTIL(cond) \
while (off < len) { \
x = str[off]; \
if (x <= 0x1f || x == '"' || x == '\\' || cond) break; \
off++;\
}
if (utf8) {
/* assume >=0x80 is valid utf8 */
while (off < len) {
x = str[off];
if (x <= 0x1f || x == '"' || x == '\\' || x == 0x7f) break;
off++;
}
if (!ctx->htmlsafe) { SKIPUNTIL(x == 0x7f) }
else { SKIPUNTIL(x == 0x7f || x == '<' || x == '>' || x == '&') }
} else {
/* binary strings need special handling for >=0x80 */
while (off < len) {
x = str[off];
if (x <= 0x1f || x == '"' || x == '\\' || x >= 0x7f) break;
off++;
}
if (!ctx->htmlsafe) { SKIPUNTIL(x >= 0x7f) }
else { SKIPUNTIL(x >= 0x7f || x == '<' || x == '>' || x == '&') }
}
#undef SKIPUNTIL
fustr_write(ctx->out, (char *)str+loff, off-loff);
if (off < len) { /* early break, which means current byte needs special processing */
@ -279,7 +281,7 @@ static SV *fujson_fmt_xs(pTHX_ I32 ax, I32 argc, SV *val) {
ctx.out = &out;
ctx.depth = 0;
ctx.pretty = INT_MIN;
ctx.canon = 0;
ctx.canon = ctx.htmlsafe = 0;
while (i < argc) {
arg = SvPV_nolen(ST(i));
i++;
@ -289,6 +291,7 @@ static SV *fujson_fmt_xs(pTHX_ I32 ax, I32 argc, SV *val) {
if (strcmp(arg, "canonical") == 0) ctx.canon = SvPVXtrue(r);
else if (strcmp(arg, "pretty") == 0) ctx.pretty = SvPVXtrue(r) ? 0 : INT_MIN;
else if (strcmp(arg, "html_safe") == 0) ctx.htmlsafe = !!SvPVXtrue(r);
else if (strcmp(arg, "utf8") == 0) encutf8 = SvPVXtrue(r);
else if (strcmp(arg, "max_size") == 0) out.maxlen = SvUV(r);
else if (strcmp(arg, "max_depth") == 0) ctx.depth = SvUV(r);