JW_STR_KV

Macro
August 22, 2025

Table of Contents

`JW_STR_KV`

Description

Write a key and string value into a JSON object.

Parameters

Name	Direction	Description
`j`	in,out	The target string to append to.
`k`	in	Key name.
`s`	in	A `Str` object containing the value.

Usage example (from documentation)

  JW_STR_KV(json, "username", user.name);

Success

Appends a key-value string pair

Failure

Does not return on failure

Usage example (Cross-references)

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In rogrammer/MisraStdC/blob/master/Tests/Json/Write.Simple.c#L112 target=_blank>Write.Simple.c:112:
JW_OBJ(json, { JW_STR_KV(json, "name", name); JW_STR_KV(json, "city", city); }); Write.Simple.c:113:
JW_OBJ(json, { JW_STR_KV(json, "name", name); JW_STR_KV(json, "city", city); }); Write.Simple.c:188:
JW_OBJ(json, { JW_INT_KV(json, "id", person.id); JW_STR_KV(json, "name", person.name); JW_INT_KV(json, "age", person.age); JW_BOOL_KV(json, "is_active", person.is_active); Write.Simple.c:216:
JW_BOOL_KV(json, "debug_mode", config.debug_mode); JW_INT_KV(json, "timeout", config.timeout); JW_STR_KV(json, "log_level", config.log_level); }); Write.Simple.c:279:
JW_OBJ(json, { JW_OBJ_KV(json, "user", { JW_STR_KV(json, "name", data.user.name); JW_STR_KV(json, "email", data.user.email); }); Write.Simple.c:280:
JW_OBJ_KV(json, "user", { JW_STR_KV(json, "name", data.user.name); JW_STR_KV(json, "email", data.user.email); }); JW_BOOL_KV(json, "active", data.active); Write.Simple.c:320:
JW_OBJ(json, { JW_INT_KV(json, "id", product.id); JW_STR_KV(json, "name", product.name); JW_FLT_KV(json, "price", product.price); JW_ARR_KV(json, "tags", product.tags, tag, { JW_STR(json, tag); }); Write.EdgeCases.c:131:
JW_OBJ(json, { JW_STR_KV(json, "name", empty_name); JW_STR_KV(json, "description", empty_desc); }); Write.EdgeCases.c:132:
JW_OBJ(json, { JW_STR_KV(json, "name", empty_name); JW_STR_KV(json, "description", empty_desc); }); Write.EdgeCases.c:242:
JW_OBJ(json, { JW_STR_KV(json, "path", path); JW_STR_KV(json, "message", message); JW_STR_KV(json, "data", data); Write.EdgeCases.c:243:
JW_OBJ(json, { JW_STR_KV(json, "path", path); JW_STR_KV(json, "message", message); JW_STR_KV(json, "data", data); }); Write.EdgeCases.c:244:
JW_STR_KV(json, "path", path); JW_STR_KV(json, "message", message); JW_STR_KV(json, "data", data); }); Write.EdgeCases.c:278:
JW_OBJ(json, { JW_STR_KV(json, "quotes", quotes); JW_STR_KV(json, "backslash", backslash); JW_STR_KV(json, "newline", newline); Write.EdgeCases.c:279:
JW_OBJ(json, { JW_STR_KV(json, "quotes", quotes); JW_STR_KV(json, "backslash", backslash); JW_STR_KV(json, "newline", newline); JW_STR_KV(json, "tab", tab); Write.EdgeCases.c:280:
JW_STR_KV(json, "quotes", quotes); JW_STR_KV(json, "backslash", backslash); JW_STR_KV(json, "newline", newline); JW_STR_KV(json, "tab", tab); }); Write.EdgeCases.c:281:
JW_STR_KV(json, "backslash", backslash); JW_STR_KV(json, "newline", newline); JW_STR_KV(json, "tab", tab); }); Write.EdgeCases.c:455:
// Single string style=color:#75715e> Str single_str = StrInitFromZstr("hello"); JW_OBJ(json2, { JW_STR_KV(json2, "text", single_str); }); // Single boolean Write.Nested.c:151:
JW_INT_KV(json, "id", data.user.id); JW_OBJ_KV(json, "profile", { JW_STR_KV(json, "name", data.user.profile.name); JW_INT_KV(json, "age", data.user.profile.age); }); Write.Nested.c:155:
}); }); JW_STR_KV(json, "status", data.status); }); Write.Nested.c:195:
JW_OBJ_KV(json, "departments", { JW_OBJ_KV(json, "engineering", { JW_STR_KV(json, "head", data.company.departments.engineering.head); JW_INT_KV(json, "count", data.company.departments.engineering.count); JW_FLT_KV(json, "budget", data.company.departments.engineering.budget); Write.Nested.c:200:
}); }); JW_STR_KV(json, "name", data.company.name); }); }); Write.Nested.c:242:
JW_OBJ(json, { JW_BOOL_KV(json, "status", response.status); JW_STR_KV(json, "message", response.message); JW_OBJ_KV(json, "data", { // Write dynamic key for source function ID Write.Nested.c:259:
JW_INT_KV(json, "nearest_neighbor_analysis_id", s->analysis_id); JW_INT_KV(json, "nearest_neighbor_binary_id", s->binary_id); JW_STR_KV(json, "nearest_neighbor_analysis_name", s->analysis_name); JW_STR_KV(json, "nearest_neighbor_function_name", s->function_name); JW_STR_KV(json, "nearest_neighbor_sha_256_hash", s->sha256); Write.Nested.c:260:
JW_INT_KV(json, "nearest_neighbor_binary_id", s->binary_id); JW_STR_KV(json, "nearest_neighbor_analysis_name", s->analysis_name); JW_STR_KV(json, "nearest_neighbor_function_name", s->function_name); JW_STR_KV(json, "nearest_neighbor_sha_256_hash", s->sha256); JW_BOOL_KV(json, "nearest_neighbor_debug", s->debug); Write.Nested.c:261:
JW_STR_KV(json, "nearest_neighbor_analysis_name", s->analysis_name); JW_STR_KV(json, "nearest_neighbor_function_name", s->function_name); JW_STR_KV(json, "nearest_neighbor_sha_256_hash", s->sha256); JW_BOOL_KV(json, "nearest_neighbor_debug", s->debug); JW_STR_KV(json, "nearest_neighbor_function_name_mangled", s->function_mangled_name); Write.Nested.c:263:
JW_STR_KV(json, "nearest_neighbor_sha_256_hash", s->sha256); JW_BOOL_KV(json, "nearest_neighbor_debug", s->debug); JW_STR_KV(json, "nearest_neighbor_function_name_mangled", s->function_mangled_name); }); Write.Nested.c:307:
JW_OBJ(json, { JW_INT_KV(json, "id", func.id); JW_STR_KV(json, "name", func.name); JW_INT_KV(json, "size", func.size); JW_INT_KV(json, "vaddr", func.vaddr); Write.Nested.c:354:
JW_OBJ(json, { JW_INT_KV(json, "binary_id", result.binary_id); JW_STR_KV(json, "binary_name", result.binary_name); JW_INT_KV(json, "analysis_id", result.analysis_id); JW_STR_KV(json, "sha256", result.sha256); Write.Nested.c:356:
JW_STR_KV(json, "binary_name", result.binary_name); JW_INT_KV(json, "analysis_id", result.analysis_id); JW_STR_KV(json, "sha256", result.sha256); JW_ARR_KV(json, "tags", result.tags, tag, { JW_STR(json, tag); }); JW_STR_KV(json, "created_at", result.created_at); Write.Nested.c:358:
JW_STR_KV(json, "sha256", result.sha256); JW_ARR_KV(json, "tags", result.tags, tag, { JW_STR(json, tag); }); JW_STR_KV(json, "created_at", result.created_at); JW_INT_KV(json, "model_id", result.model_id); JW_STR_KV(json, "model_name", result.model_name); Write.Nested.c:360:
JW_STR_KV(json, "created_at", result.created_at); JW_INT_KV(json, "model_id", result.model_id); JW_STR_KV(json, "model_name", result.model_name); JW_STR_KV(json, "owned_by", result.owned_by); }); Write.Nested.c:361:
JW_INT_KV(json, "model_id", result.model_id); JW_STR_KV(json, "model_name", result.model_name); JW_STR_KV(json, "owned_by", result.owned_by); }); Write.Nested.c:418:
JW_OBJ_KV(json, target_key.data, { JW_FLT_KV(json, "distance", symbol.distance); JW_STR_KV(json, "name", symbol.function_name); }); Write.Nested.c:456:
JW_OBJ_KV(json, "level2", { JW_OBJ_KV(json, "level3", { JW_STR_KV(json, "message", deep_message); JW_INT_KV(json, "value", 42); }); Write.Nested.c:461:
JW_BOOL_KV(json, "flag", true); }); JW_STR_KV(json, "name", test_name); }); }); RoundTrip.c:104:
JW_FLT_KV(json, "temperature", original.temperature); JW_BOOL_KV(json, "enabled", original.enabled); JW_STR_KV(json, "message", original.message); }); RoundTrip.c:300:
Str json = StrInit(); JW_OBJ(json, { JW_STR_KV(json, "empty", original.empty); JW_STR_KV(json, "simple", original.simple); JW_STR_KV(json, "with_spaces", original.with_spaces); RoundTrip.c:301:

    JW_OBJ(json, { JW_STR_KV(json, "empty", original.empty); JW_STR_KV(json, "simple", original.simple); JW_STR_KV(json, "with_spaces", original.with_spaces); JW_STR_KV(json, "with_special", original.with_special); RoundTrip.c:302:

    JW_STR_KV(json, "empty", original.empty); JW_STR_KV(json, "simple", original.simple); JW_STR_KV(json, "with_spaces", original.with_spaces); JW_STR_KV(json, "with_special", original.with_special); }); RoundTrip.c:303:    JW_STR_KV(json, "simple", original.simple); JW_STR_KV(json, "with_spaces", original.with_spaces); JW_STR_KV(json, "with_special", original.with_special); }); RoundTrip.c:462:    JW_OBJ_KV(json, "user", { JW_INT_KV(json, "id", original_person.id); JW_STR_KV(json, "name", original_person.name); JW_INT_KV(json, "age", original_person.age); JW_BOOL_KV(json, "is_active", original_person.is_active); RoundTrip.c:541:    JW_OBJ_KV(json, "user", { JW_INT_KV(json, "id", original.user.id); JW_STR_KV(json, "name", original.user.name); JW_INT_KV(json, "age", original.user.age); JW_BOOL_KV(json, "is_active", original.user.is_active); RoundTrip.c:549:    JW_BOOL_KV(json, "debug_mode", original.config.debug_mode); JW_INT_KV(json, "timeout", original.config.timeout); JW_STR_KV(json, "log_level", original.config.log_level); JW_ARR_KV(json, "features", original.config.features, feature, { JW_STR(json, feature); }); }); RoundTrip.c:655:    Str json = StrInit(); JW_OBJ(json, { JW_STR_KV(json, "empty_string", empty_str); JW_ARR_KV(json, "empty_numbers", empty_numbers, num, { JW_INT(json, num); }); JW_ARR_KV(json, "empty_strings", empty_strings, str, { JW_STR(json, str); });
Tags :
JSON
Macro
Writer
String
Key value
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JW_STR_KV

`JW_STR_KV`

Description

Parameters

Usage example (from documentation)

Success

Failure

Usage example (Cross-references)

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`JW_OBJ`

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