From 1d055261b4144dbf86b2658437015b15d4dd9bff Mon Sep 17 00:00:00 2001
From: Richard <q@1bpm.net>
Date: Sun, 4 Sep 2022 00:32:56 +0100
Subject: initial

---
 examples/example1.csd | 133 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 examples/example1.csd

(limited to 'examples/example1.csd')

diff --git a/examples/example1.csd b/examples/example1.csd
new file mode 100644
index 0000000..5ba2436
--- /dev/null
+++ b/examples/example1.csd
@@ -0,0 +1,133 @@
+/*
+    csound-json example 1
+
+    load data, examine and modify, print and output to file
+
+*/
+<CsoundSynthesizer>
+<CsLicence>
+    Released into the public domain under the Unlicense license
+    http://unlicense.org/
+</CsLicence>
+<CsOptions>
+-odac
+-d
+</CsOptions>
+<CsInstruments>
+sr = 44100
+ksmps = 64
+nchnls = 2
+0dbfs = 1
+
+
+; base JSON string
+gSjson = {{
+    {
+        "instruments": {
+            "oscil1": [
+                [0, 2, 440],
+                [2, 4, 880],
+                [4, 2, 220]
+            ],
+            "oscil2": [
+                [6, 2, 880, "word"],
+                [8, 2, 220]
+            ]
+        },
+        "details": {
+            "createdby": "Richard Knight",
+            "createdon": "2022-09-02"
+        }
+    }
+}}
+
+instr boot
+
+    ; load JSON data and print the type detected
+	iJson jsonloads gSjson
+    prints sprintf("1. Loaded; type = %s\n", jsontype:S(iJson))
+
+    ; query using JSONPath, print type found and dump string
+    iqueried jsonpath iJson, "$.instruments['oscil2'][0][:]"
+    prints sprintf("2. Path query 1; type = %s\n", jsontype:S(iqueried))
+    prints sprintf("3. Dumped path query 1:\n%s\n\n", jsondumps(iqueried))
+
+    ; output JSONPath query result to numeric array (strings result in 0)
+    prints "4. Path query 1 to numeric array:\n"
+    idata[] jsonarrval iqueried
+    printarray idata
+
+    ; output JSONPath query result to string array
+    prints "\n5. Path query 1 to string array:\n"
+    Sarray[] jsonarrval iqueried
+    index = 0
+    while (index < lenarray(Sarray)) do
+        prints sprintf("%s ", Sarray[index])
+        index += 1
+    od
+    prints "\n\n"
+
+    ; query with JSON Pointer, print type and dump string
+    iqueried jsonptr iJson, "/instruments/oscil1"
+    prints sprintf("6. Pointer query 1; type = %s\n", jsontype:S(iqueried))
+    prints sprintf("7. output:\n%s\n\n", jsondumps(iqueried))
+
+    ; query with JSON Pointer, print type (should be numeric), convert and print
+    iqueried jsonptr iJson, "/instruments/oscil1/0/2"
+    prints sprintf("8. Pointer query 2; type = %s\n", jsontype:S(iqueried))
+    inum = strtod(jsondumps(iqueried))
+    prints sprintf("9. output as string, converted to numeric in csound: %d\n\n", inum)
+
+    ; query with JSON Pointer to get instruments object
+    iinstruments1 jsonptr iJson, "/instruments"
+    
+    ; load supplementary data from file and extract instruments object with JSON Pointer query
+    iJson2 jsonload "supplement.json"
+    prints sprintf("10. File loaded; type = %s\n", jsontype:S(iJson2))
+    iinstruments2 jsonptr iJson2, "/instruments"
+    
+
+    ; merge the two instruments objects
+    jsonmerge iinstruments1, iinstruments2, 1
+    prints sprintf("11. Merged instruments; dumped data:\n%s\n\n", jsondumps(iinstruments1))
+
+    ; insert the merged object back to the "instruments" key
+    jsoninsert iJson, "instruments", iinstruments1
+    prints sprintf("12. Inserted instruments back to original; dumped data:\n%s\n\n", jsondumps(iJson))
+
+    ; create a new empty JSON object and insert some values with keys
+    iJson jsoninit
+    jsoninsertval iJson, "hello", "world"
+    jsoninsertval iJson, "numeric", 3
+
+    ; create JSON object from string and insert with key
+    jsoninsert iJson, "array", jsonloads("[1,2,3]")
+
+    ; insert array values
+    iarraydata[] fillarray 3, 2, 1, 0
+    jsoninsertval iJson, "arraycs", iarraydata
+
+    ; insert string array values
+    Sarraydata[] fillarray "hello", "world", "again"
+    jsoninsertval iJson, "stringarraycs", Sarraydata
+
+    iJsonarray[] fillarray jsonloads("{\"a\": \"b\"}"), jsonloads("{\"c\": 321, \"e\": 123}")
+    jsoninsert iJson, "subobject", iJsonarray
+
+    ; use JSON Pointer to replace a value
+    jsonptrrplval iJson, "/hello", "goodbye"
+
+    ; use JSONPath to replace value
+    jsonpathrplval iJson, "$.subobject[0]['a']", "this is a"
+
+    prints sprintf("13. Inserted to new; dumped data:\n%s\n\n", jsondumps(iJson))
+
+    jsondump iJson, "example_output.json"
+    prints "14. Wrote to output file\n"
+endin
+
+</CsInstruments>
+<CsScore>
+i"boot" 0 1
+</CsScore>
+</CsoundSynthesizer>
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