2021-04-17 02:41:46 +02:00
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//
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// PDF array functions for pdfio.
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//
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// Copyright © 2021 by Michael R Sweet.
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//
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// Licensed under Apache License v2.0. See the file "LICENSE" for more
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// information.
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//
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//
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// Include necessary headers...
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//
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#include "pdfio-private.h"
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2021-04-25 17:28:56 +02:00
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//
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// Local functions...
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//
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static bool append_value(pdfio_array_t *a, _pdfio_value_t *v);
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//
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// 'pdfioArrayAppendArray()' - Add an array value to an array.
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//
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bool // O - `true` on success, `false` on failure
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pdfioArrayAppendArray(
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pdfio_array_t *a, // I - Array
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pdfio_array_t *value) // I - Value
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{
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_pdfio_value_t v; // Value for array
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2021-04-30 14:02:54 +02:00
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// Range check input
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if (!a || !value)
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return (false);
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// Add an array...
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2021-04-25 17:28:56 +02:00
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v.type = PDFIO_VALTYPE_ARRAY;
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v.value.array = value;
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return (append_value(a, &v));
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2021-04-17 02:41:46 +02:00
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}
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2021-04-30 14:02:54 +02:00
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//
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// 'pdfioArrayAppendBinary()' - Add a binary string value to an array.
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//
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bool // O - `true` on success, `false` on failure
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pdfioArrayAppendBinary(
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pdfio_array_t *a, // I - Array
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unsigned char *value, // I - Value
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size_t valuelen) // I - Length of value
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{
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_pdfio_value_t v; // Value for array
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// Range check input
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if (!a || !value || !valuelen)
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return (false);
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// Add a binary string...
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v.type = PDFIO_VALTYPE_BINARY;
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v.value.binary.datalen = valuelen;
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if ((v.value.binary.data = (unsigned char *)malloc(valuelen)) == NULL)
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{
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_pdfioFileError(a->pdf, "Unable to allocate memory for binary string - %s", strerror(errno));
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return (false);
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}
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memcpy(v.value.binary.data, value, valuelen);
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2021-05-01 13:36:19 +02:00
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if (!append_value(a, &v))
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{
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free(v.value.binary.data);
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return (false);
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}
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2021-04-30 14:02:54 +02:00
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2021-05-01 13:36:19 +02:00
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return (true);
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2021-04-30 14:02:54 +02:00
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}
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayAppendBoolean()' - Add a boolean value to an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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bool // O - `true` on success, `false` on failure
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pdfioArrayAppendBoolean(
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pdfio_array_t *a, // I - Array
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bool value) // I - Value
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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_pdfio_value_t v; // Value for array
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2021-04-30 14:02:54 +02:00
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// Range check input
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if (!a)
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return (false);
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// Add a boolean...
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2021-04-26 00:12:24 +02:00
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v.type = PDFIO_VALTYPE_BOOLEAN;
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v.value.boolean = value;
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return (append_value(a, &v));
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayAppendDict()' - Add a dictionary to an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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bool // O - `true` on success, `false` on failure
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pdfioArrayAppendDict(
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pdfio_array_t *a, // I - Array
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pdfio_dict_t *value) // I - Value
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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_pdfio_value_t v; // Value for array
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2021-04-30 14:02:54 +02:00
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// Range check input
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if (!a || !value)
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return (false);
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// Add a dictionary...
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2021-04-26 00:12:24 +02:00
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v.type = PDFIO_VALTYPE_DICT;
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v.value.dict = value;
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return (append_value(a, &v));
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayAppendName()' - Add a name to an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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bool // O - `true` on success, `false` on failure
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pdfioArrayAppendName(
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pdfio_array_t *a, // I - Array
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const char *value) // I - Value
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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_pdfio_value_t v; // Value for array
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2021-04-30 14:02:54 +02:00
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// Range check input
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if (!a || !value)
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return (false);
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// Add a name string...
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2021-04-26 00:12:24 +02:00
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v.type = PDFIO_VALTYPE_NAME;
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v.value.name = value;
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return (append_value(a, &v));
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayAppendNumber()' - Add a number to an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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bool // O - `true` on success, `false` on failure
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pdfioArrayAppendNumber(
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pdfio_array_t *a, // I - Array
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float value) // I - Value
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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_pdfio_value_t v; // Value for array
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2021-04-30 14:02:54 +02:00
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// Range check input
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if (!a)
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return (false);
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// Add a number...
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2021-04-26 00:12:24 +02:00
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v.type = PDFIO_VALTYPE_NUMBER;
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v.value.number = value;
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return (append_value(a, &v));
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayAppendObject()' - Add an indirect object reference to an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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bool // O - `true` on success, `false` on failure
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pdfioArrayAppendObject(
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pdfio_array_t *a, // I - Array
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pdfio_obj_t *value) // I - Value
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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_pdfio_value_t v; // Value for array
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2021-04-30 14:02:54 +02:00
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// Range check input
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if (!a || !value || a->pdf != value->pdf)
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return (false);
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// Add an indirect reference...
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2021-04-26 00:12:24 +02:00
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v.type = PDFIO_VALTYPE_INDIRECT;
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v.value.obj = value;
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return (append_value(a, &v));
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayAppendString()' - Add a string to an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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bool // O - `true` on success, `false` on failure
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pdfioArrayAppendString(
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pdfio_array_t *a, // I - Array
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const char *value) // I - Value
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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_pdfio_value_t v; // Value for array
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2021-04-30 14:02:54 +02:00
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// Range check input
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if (!a || !value)
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return (false);
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// Add a string...
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2021-04-26 00:12:24 +02:00
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v.type = PDFIO_VALTYPE_STRING;
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v.value.string = value;
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return (append_value(a, &v));
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2021-04-17 02:41:46 +02:00
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}
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2021-04-28 03:22:34 +02:00
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//
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// 'pdfioArrayCopy()' - Copy an array.
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//
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pdfio_array_t * // O - New array or `NULL` on error
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pdfioArrayCopy(pdfio_file_t *pdf, // I - PDF file
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pdfio_array_t *a) // I - Original array
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{
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2021-04-30 14:02:54 +02:00
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pdfio_array_t *na; // New array
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size_t i; // Looping var
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_pdfio_value_t *vsrc, // Current source value
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vdst; // Current destination value
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// Create the new array...
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if ((na = pdfioArrayCreate(pdf)) == NULL)
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return (NULL);
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// Pre-allocate the values array to make this a little faster...
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if ((na->values = (_pdfio_value_t *)malloc(a->num_values * sizeof(_pdfio_value_t))) == NULL)
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return (NULL); // Let pdfioFileClose do the cleanup...
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na->alloc_values = a->num_values;
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// Copy and add each of the source array's values...
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for (i = a->num_values, vsrc = a->values; i > 0; i --, vsrc ++)
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{
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if (!_pdfioValueCopy(pdf, &vdst, a->pdf, vsrc))
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return (NULL); // Let pdfioFileClose do the cleanup...
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2021-04-30 14:21:21 +02:00
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// Cannot fail since we already allocated memory...
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append_value(na, &vdst);
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2021-04-30 14:02:54 +02:00
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}
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// Successfully copied the array, so return it...
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return (na);
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2021-04-28 03:22:34 +02:00
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}
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayCreate()' - Create an empty array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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pdfio_array_t * // O - New array or `NULL` on error
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pdfioArrayCreate(pdfio_file_t *pdf) // I - PDF file
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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pdfio_array_t *a; // Array
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if (!pdf)
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return (NULL);
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if ((a = (pdfio_array_t *)calloc(1, sizeof(pdfio_array_t))) == NULL)
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return (NULL);
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2021-04-26 02:12:52 +02:00
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a->pdf = pdf;
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2021-04-26 00:12:24 +02:00
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if (pdf->num_arrays >= pdf->alloc_arrays)
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{
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pdfio_array_t **temp = realloc(pdf->arrays, (pdf->alloc_arrays + 16) * sizeof(pdfio_array_t *));
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if (!temp)
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{
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free(a);
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return (NULL);
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}
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pdf->arrays = temp;
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pdf->alloc_arrays += 16;
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}
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pdf->arrays[pdf->num_arrays ++] = a;
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return (a);
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2021-04-17 02:41:46 +02:00
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}
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2021-04-17 03:09:43 +02:00
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//
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2021-04-26 00:12:24 +02:00
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// '_pdfioArrayDelete()' - Free the memory used by an array.
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2021-04-17 03:09:43 +02:00
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//
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2021-04-26 00:12:24 +02:00
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void
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_pdfioArrayDelete(pdfio_array_t *a) // I - Array
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2021-04-17 03:09:43 +02:00
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{
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2021-04-26 00:12:24 +02:00
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if (a)
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free(a->values);
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free(a);
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2021-04-17 03:09:43 +02:00
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}
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayGetArray()' - Get an array value from an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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pdfio_array_t * // O - Value
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pdfioArrayGetArray(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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if (!a || n >= a->num_values || a->values[n].type != PDFIO_VALTYPE_ARRAY)
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return (NULL);
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else
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return (a->values[n].value.array);
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2021-04-17 02:41:46 +02:00
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}
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2021-04-30 14:02:54 +02:00
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//
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// 'pdfioArrayGetBinary()' - Get a binary string value from an array.
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//
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unsigned char * // O - Value
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pdfioArrayGetBinary(
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pdfio_array_t *a, // I - Array
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size_t n, // I - Index
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size_t *length) // O - Length of string
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{
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if (!a || n >= a->num_values || a->values[n].type != PDFIO_VALTYPE_BINARY || !length)
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{
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if (length)
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*length = 0;
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return (NULL);
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}
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else
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{
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*length = a->values[n].value.binary.datalen;
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return (a->values[n].value.binary.data);
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}
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}
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayGetBoolean()' - Get a boolean value from an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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bool // O - Value
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pdfioArrayGetBoolean(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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if (!a || n >= a->num_values || a->values[n].type != PDFIO_VALTYPE_BOOLEAN)
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return (false);
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else
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return (a->values[n].value.boolean);
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayGetDict()' - Get a dictionary value from an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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pdfio_dict_t * // O - Value
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pdfioArrayGetDict(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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if (!a || n >= a->num_values || a->values[n].type != PDFIO_VALTYPE_DICT)
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return (NULL);
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else
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return (a->values[n].value.dict);
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayGetName()' - Get a name value from an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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const char * // O - Value
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pdfioArrayGetName(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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if (!a || n >= a->num_values || a->values[n].type != PDFIO_VALTYPE_NAME)
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return (NULL);
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else
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return (a->values[n].value.name);
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayGetNumber()' - Get a number from an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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float // O - Value
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pdfioArrayGetNumber(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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if (!a || n >= a->num_values || a->values[n].type != PDFIO_VALTYPE_NUMBER)
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return (0.0f);
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else
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return (a->values[n].value.number);
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayGetObject()' - Get an indirect object reference from an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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pdfio_obj_t * // O - Value
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pdfioArrayGetObject(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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if (!a || n >= a->num_values || a->values[n].type != PDFIO_VALTYPE_INDIRECT)
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return (NULL);
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else
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return (a->values[n].value.obj);
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayGetSize()' - Get the length of an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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size_t // O - Length of array
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pdfioArrayGetSize(pdfio_array_t *a) // I - Array
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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return (a ? a->num_values : 0);
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayGetString()' - Get a string value from an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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const char * // O - Value
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pdfioArrayGetString(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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if (!a || n >= a->num_values || a->values[n].type != PDFIO_VALTYPE_STRING)
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return (NULL);
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else
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return (a->values[n].value.string);
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayGetType()' - Get a value type from an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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pdfio_valtype_t // O - Value type
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pdfioArrayGetType(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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if (!a || n >= a->num_values)
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return (PDFIO_VALTYPE_NONE);
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else
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return (a->values[n].type);
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2021-04-17 02:41:46 +02:00
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}
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2021-04-25 17:28:56 +02:00
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//
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2021-04-26 00:12:24 +02:00
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// '_pdfioArrayGetValue()' - Get a value from an array.
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2021-04-25 17:28:56 +02:00
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//
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2021-04-26 00:12:24 +02:00
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_pdfio_value_t * // O - Value
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_pdfioArrayGetValue(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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2021-04-25 17:28:56 +02:00
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{
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2021-04-26 00:12:24 +02:00
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if (!a || n >= a->num_values)
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return (NULL);
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else
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return (a->values + n);
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2021-04-25 17:28:56 +02:00
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}
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2021-04-28 03:22:34 +02:00
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//
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// '_pdfioArrayWrite()' - Write an array to a PDF file.
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//
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bool // O - `true` on success, `false` otherwise
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_pdfioArrayWrite(pdfio_array_t *a) // I - Array
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{
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pdfio_file_t *pdf = a->pdf; // PDF file
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size_t i; // Looping var
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_pdfio_value_t *v; // Current value
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// Arrays are surrounded by square brackets ([ ... ])
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if (!_pdfioFilePuts(pdf, "["))
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return (false);
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// Write each value...
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for (i = a->num_values, v = a->values; i > 0; i --, v ++)
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{
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if (!_pdfioValueWrite(pdf, v))
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return (false);
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}
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// Closing bracket...
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return (_pdfioFilePuts(pdf, "]"));
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}
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2021-04-25 17:28:56 +02:00
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//
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// 'append_value()' - Append a value.
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//
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static bool // O - `true` on success, `false` otherwise
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append_value(pdfio_array_t *a, // I - Array
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_pdfio_value_t *v) // I - Value
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{
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if (a->num_values >= a->alloc_values)
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{
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_pdfio_value_t *temp = (_pdfio_value_t *)realloc(a->values, (a->alloc_values + 16) * sizeof(_pdfio_value_t));
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if (!temp)
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return (false);
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a->values = temp;
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a->alloc_values += 16;
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}
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a->values[a->num_values ++] = *v;
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return (true);
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}
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