static void test_extract_scalar_prefix() { Buffer *b = BufferNew(); assert_int_equal(sizeof("hello ") - 1, ExtractScalarPrefix(b, "hello $(world) xy", sizeof("hello $(world) xy") -1)); assert_string_equal("hello ", BufferData(b)); BufferClear(b); assert_int_equal(sizeof("hello (world) xy") -1, ExtractScalarPrefix(b, "hello (world) xy", sizeof("hello (world) xy") -1)); assert_string_equal("hello (world) xy", BufferData(b)); BufferClear(b); assert_int_equal(sizeof("hello$)") -1, ExtractScalarPrefix(b, "hello$)$(world)xy", sizeof("hello$)$(world)xy") -1)); assert_string_equal("hello$)", BufferData(b)); BufferClear(b); assert_int_equal(0, ExtractScalarPrefix(b, "", 0)); assert_string_equal("", BufferData(b)); BufferDestroy(b); }
bool ExpandScalar(const EvalContext *ctx, const char *ns, const char *scope, const char *string, Buffer *out) { assert(string); bool returnval = true; if (strlen(string) == 0) { return false; } // TODO: cleanup, optimize this mess Buffer *var = BufferNew(); Buffer *current_item = BufferNew(); Buffer *temp = BufferNew(); for (const char *sp = string; /* No exit */ ; sp++) /* check for varitems */ { char varstring = false; size_t increment = 0; if (*sp == '\0') { break; } BufferZero(current_item); ExtractScalarPrefix(current_item, sp, strlen(sp)); BufferAppend(out, BufferData(current_item), BufferSize(current_item)); sp += BufferSize(current_item); if (*sp == '\0') { break; } BufferZero(var); if (*sp == '$') { switch (*(sp + 1)) { case '(': varstring = ')'; ExtractScalarReference(var, sp, strlen(sp), false); if (BufferSize(var) == 0) { BufferAppendChar(out, '$'); continue; } break; case '{': varstring = '}'; ExtractScalarReference(var, sp, strlen(sp), false); if (BufferSize(var) == 0) { BufferAppendChar(out, '$'); continue; } break; default: BufferAppendChar(out, '$'); continue; } } BufferZero(current_item); { BufferZero(temp); ExtractScalarReference(temp, sp, strlen(sp), true); if (IsCf3VarString(BufferData(temp))) { ExpandScalar(ctx, ns, scope, BufferData(temp), current_item); } else { BufferAppend(current_item, BufferData(temp), BufferSize(temp)); } } increment = BufferSize(var) - 1; char name[CF_MAXVARSIZE] = ""; if (!IsExpandable(BufferData(current_item))) { DataType type = DATA_TYPE_NONE; const void *value = NULL; { VarRef *ref = VarRefParseFromNamespaceAndScope(BufferData(current_item), ns, scope, CF_NS, '.'); value = EvalContextVariableGet(ctx, ref, &type); VarRefDestroy(ref); } if (value) { switch (type) { case DATA_TYPE_STRING: case DATA_TYPE_INT: case DATA_TYPE_REAL: BufferAppend(out, value, strlen(value)); break; case DATA_TYPE_STRING_LIST: case DATA_TYPE_INT_LIST: case DATA_TYPE_REAL_LIST: case DATA_TYPE_NONE: if (varstring == '}') { snprintf(name, CF_MAXVARSIZE, "${%s}", BufferData(current_item)); } else { snprintf(name, CF_MAXVARSIZE, "$(%s)", BufferData(current_item)); } BufferAppend(out, name, strlen(name)); returnval = false; break; default: Log(LOG_LEVEL_DEBUG, "Returning Unknown Scalar ('%s' => '%s')", string, BufferData(out)); BufferDestroy(var); BufferDestroy(current_item); BufferDestroy(temp); return false; } } else { if (varstring == '}') { snprintf(name, CF_MAXVARSIZE, "${%s}", BufferData(current_item)); } else { snprintf(name, CF_MAXVARSIZE, "$(%s)", BufferData(current_item)); } BufferAppend(out, name, strlen(name)); returnval = false; } } sp += increment; BufferZero(current_item); } BufferDestroy(var); BufferDestroy(current_item); BufferDestroy(temp); return returnval; }
static void ExpandAndMapIteratorsFromScalar(EvalContext *ctx, const Bundle *bundle, char *string, size_t length, int level, Rlist **scalars, Rlist **lists, Rlist **containers, Rlist **full_expansion) { assert(string); if (!string) { return; } Buffer *value = BufferNew(); for (size_t i = 0; i < length; i++) { const char *sp = string + i; Rlist *tmp_list = NULL; BufferZero(value); if (ExtractScalarPrefix(value, sp, length - i)) { if (full_expansion) { RlistConcatInto(&tmp_list, *full_expansion, BufferData(value)); RlistDestroy(*full_expansion); *full_expansion = tmp_list; tmp_list = NULL; } sp += BufferSize(value); i += BufferSize(value); BufferZero(value); if (i >= length) { break; } } if (*sp == '$') { BufferZero(value); ExtractScalarReference(value, sp, length - i, true); if (BufferSize(value) > 0) { Rlist *inner_expansion = NULL; Rlist *exp = NULL; int success = 0; VarRef *ref = VarRefParse(BufferData(value)); int increment = BufferSize(value) - 1 + 3; // Handle any embedded variables char *substring = string + i + 2; ExpandAndMapIteratorsFromScalar(ctx, bundle, substring, BufferSize(value), level+1, scalars, lists, containers, &inner_expansion); for (exp = inner_expansion; exp != NULL; exp = exp->next) { // If a list is non-local, i.e. $(bundle.var), map it to local $(bundle#var) // NB without modifying variables as we map them, it's not // possible to handle remote lists referenced by a variable // scope. For example: // scope => "test."; var => "somelist"; $($(scope)$(var)) fails // varname => "test.somelist"; $($(varname)) also fails // TODO Unless the consumer handles it? const char *inner_ref_str = RlistScalarValue(exp); VarRef *inner_ref = VarRefParseFromBundle(inner_ref_str, bundle); // var is the expanded name of the variable in its native context // finalname will be the mapped name in the local context "this." DataType value_type = DATA_TYPE_NONE; const void *value = EvalContextVariableGet(ctx, inner_ref, &value_type); if (value) { char *mangled_inner_ref = xstrdup(inner_ref_str); MangleVarRefString(mangled_inner_ref, strlen(mangled_inner_ref)); success++; switch (DataTypeToRvalType(value_type)) { case RVAL_TYPE_LIST: if (level > 0) { RlistPrependScalarIdemp(lists, mangled_inner_ref); } else { RlistAppendScalarIdemp(lists, mangled_inner_ref); } if (full_expansion) { for (const Rlist *rp = value; rp != NULL; rp = rp->next) { // append each slist item to each of full_expansion RlistConcatInto(&tmp_list, *full_expansion, RlistScalarValue(rp)); } } break; case RVAL_TYPE_SCALAR: RlistAppendScalarIdemp(scalars, mangled_inner_ref); if (full_expansion) { // append the scalar value to each of full_expansion RlistConcatInto(&tmp_list, *full_expansion, value); } break; case RVAL_TYPE_CONTAINER: if (level > 0) { RlistPrependScalarIdemp(containers, mangled_inner_ref); } else { RlistAppendScalarIdemp(containers, mangled_inner_ref); } break; case RVAL_TYPE_FNCALL: case RVAL_TYPE_NOPROMISEE: break; } free(mangled_inner_ref); } VarRefDestroy(inner_ref); } RlistDestroy(inner_expansion); if (full_expansion) { RlistDestroy(*full_expansion); *full_expansion = tmp_list; tmp_list = NULL; } // No need to map this.* even though it's technically qualified if (success && IsQualifiedVariable(BufferData(value)) && strcmp(ref->scope, "this") != 0) { char *dotpos = strchr(substring, '.'); if (dotpos) { *dotpos = CF_MAPPEDLIST; // replace '.' with '#' } if (strchr(BufferData(value), ':')) { char *colonpos = strchr(substring, ':'); if (colonpos) { *colonpos = '*'; } } } VarRefDestroy(ref); sp += increment; i += increment; } } } BufferDestroy(value); }
/** * Expand a #string into Buffer #out, returning the pointer to the string * itself, inside the Buffer #out. If #out is NULL then the buffer will be * created and destroyed internally. * * @retval NULL something went wrong */ char *ExpandScalar(const EvalContext *ctx, const char *ns, const char *scope, const char *string, Buffer *out) { bool out_belongs_to_us = false; if (out == NULL) { out = BufferNew(); out_belongs_to_us = true; } assert(string != NULL); assert(out != NULL); Buffer *current_item = BufferNew(); for (const char *sp = string; *sp != '\0'; sp++) { BufferClear(current_item); ExtractScalarPrefix(current_item, sp, strlen(sp)); BufferAppend(out, BufferData(current_item), BufferSize(current_item)); sp += BufferSize(current_item); if (*sp == '\0') { break; } BufferClear(current_item); char varstring = sp[1]; ExtractScalarReference(current_item, sp, strlen(sp), true); sp += BufferSize(current_item) + 2; if (IsCf3VarString(BufferData(current_item))) { Buffer *temp = BufferCopy(current_item); BufferClear(current_item); ExpandScalar(ctx, ns, scope, BufferData(temp), current_item); BufferDestroy(temp); } if (!IsExpandable(BufferData(current_item))) { VarRef *ref = VarRefParseFromNamespaceAndScope( BufferData(current_item), ns, scope, CF_NS, '.'); DataType value_type; const void *value = EvalContextVariableGet(ctx, ref, &value_type); VarRefDestroy(ref); switch (DataTypeToRvalType(value_type)) { case RVAL_TYPE_SCALAR: assert(value != NULL); BufferAppendString(out, value); continue; break; case RVAL_TYPE_CONTAINER: { assert(value != NULL); const JsonElement *jvalue = value; /* instead of casts */ if (JsonGetElementType(jvalue) == JSON_ELEMENT_TYPE_PRIMITIVE) { BufferAppendString(out, JsonPrimitiveGetAsString(jvalue)); continue; } break; } default: /* TODO Log() */ break; } } if (varstring == '{') { BufferAppendF(out, "${%s}", BufferData(current_item)); } else { BufferAppendF(out, "$(%s)", BufferData(current_item)); } } BufferDestroy(current_item); LogDebug(LOG_MOD_EXPAND, "ExpandScalar( %s : %s . %s ) => %s", SAFENULL(ns), SAFENULL(scope), string, BufferData(out)); return out_belongs_to_us ? BufferClose(out) : BufferGet(out); }
bool ExpandScalar(const EvalContext *ctx, const char *ns, const char *scope, const char *string, Buffer *out) { assert(string); if (strlen(string) == 0) { return true; } bool fully_expanded = true; Buffer *current_item = BufferNew(); for (const char *sp = string; *sp != '\0'; sp++) { BufferClear(current_item); ExtractScalarPrefix(current_item, sp, strlen(sp)); BufferAppend(out, BufferData(current_item), BufferSize(current_item)); sp += BufferSize(current_item); if (*sp == '\0') { break; } BufferClear(current_item); char varstring = sp[1]; ExtractScalarReference(current_item, sp, strlen(sp), true); sp += BufferSize(current_item) + 2; if (IsCf3VarString(BufferData(current_item))) { Buffer *temp = BufferCopy(current_item); BufferClear(current_item); ExpandScalar(ctx, ns, scope, BufferData(temp), current_item); BufferDestroy(temp); } if (!IsExpandable(BufferData(current_item))) { DataType type = CF_DATA_TYPE_NONE; const void *value = NULL; { VarRef *ref = VarRefParseFromNamespaceAndScope(BufferData(current_item), ns, scope, CF_NS, '.'); value = EvalContextVariableGet(ctx, ref, &type); VarRefDestroy(ref); } if (value) { switch (DataTypeToRvalType(type)) { case RVAL_TYPE_SCALAR: BufferAppendString(out, value); continue; case RVAL_TYPE_CONTAINER: if (JsonGetElementType((JsonElement*)value) == JSON_ELEMENT_TYPE_PRIMITIVE) { BufferAppendString(out, JsonPrimitiveGetAsString((JsonElement*)value)); continue; } break; default: break; } } } if (varstring == '{') { BufferAppendF(out, "${%s}", BufferData(current_item)); } else { BufferAppendF(out, "$(%s)", BufferData(current_item)); } } BufferDestroy(current_item); return fully_expanded; }