1+ Param () # No parameters for now
2+
3+ Set-StrictMode - Version Latest
4+ $ErrorActionPreference = ' Stop'
5+
6+ # Ensure the "generated" folder exists
7+ if (-not (Test-Path - LiteralPath ' generated'
8+ New-Item - ItemType Directory - Path ' generated' | Out-Null
9+ }
10+
11+ if (Test-Path ' generated\build_id.h'
12+ # ------------------------------------------------------------------------------
13+ # 1) CAPTURE SIGNATURE A (LIST OF UNCOMMITTED CHANGES WITH LINES ADDED/REMOVED)
14+ # ------------------------------------------------------------------------------
15+ Write-Host " [build_id_gen] Gathering diff info (Signature A)..."
16+
17+ # 1A) Normal 'numstat' lines for tracked changes
18+ $signatureA_current_lines = git diff -- numstat
19+
20+ # 1B) Collect untracked files so we can treat them like "newly added"
21+ # (i.e., lines = total lines, removed = 0)
22+ $untrackedFiles = git ls- files -- others -- exclude- standard
23+
24+ foreach ($uf in $untrackedFiles ) {
25+ # Ensure file still exists (and isn't a folder)
26+ if (Test-Path $uf ) {
27+ # Count lines. If the file is huge or binary, consider try/catch or skip.
28+ $lineCount = (Get-Content $uf - ErrorAction SilentlyContinue | Measure-Object - Line).Lines
29+
30+ # Append path to make relative to solution (repo) root
31+ $uf = ' IntelPresentMon/Versioning/' + $uf
32+
33+ # Append a "numstat-like" line: "<lines> 0 <filePath>"
34+ # Use backtick-t (`t) for tabs, to mirror git diff --numstat output.
35+ $signatureA_current_lines += " $lineCount `t 0`t $uf "
36+ }
37+ }
38+
39+ # 1C) Build a single signature string (space-separated or however you like).
40+ # If you want each record separated by a newline instead, use "-join [Environment]::NewLine"
41+ $signatureA_current = $signatureA_current_lines -join ' '
42+
43+ # Retrieve previous signature A if it exists
44+ $signatureA_prev = ' '
45+ if (Test-Path ' generated\signature_a_prev.txt'
46+ $signatureA_prev = Get-Content ' generated\signature_a_prev.txt' - Raw
47+ }
48+
49+ # ------------------------------------------------------------------------------
50+ # 2) CAPTURE SIGNATURE B (PER-FILE MD5 FOR ALL UNCOMMITTED FILES)
51+ # ------------------------------------------------------------------------------
52+ Write-Host " [build_id_gen] Calculating per-file hashes (Signature B)..."
53+ $signatureB_current = ' '
54+
55+ foreach ($line in $signatureA_current_lines ) {
56+ # Each line is something like: 10 2 src\main.cpp
57+ # Split on whitespace
58+ $fields = $line -split ' \s+'
59+ if ($fields.Count -ge 3 ) {
60+ $linesAdded = $fields [0 ]
61+ $linesRemoved = $fields [1 ]
62+ $changedFile = ' ../../' + $fields [2 ]
63+
64+ # Edge case: file might be deleted or not present
65+ if (-not (Test-Path $changedFile )) {
66+ # Write-Host "[build_id_gen] File '$changedFile' does not exist (possibly deleted). Skipping..."
67+ continue
68+ }
69+
70+ # Get MD5 hash of the file
71+ # (You can change -Algorithm to e.g. SHA256 if desired)
72+ $hash = (Get-FileHash $changedFile - Algorithm MD5).Hash
73+ $signatureB_current += $hash
74+ }
75+ }
76+
77+ # Retrieve previous signature B if it exists s
78+ $signatureB_prev = ' '
79+ if (Test-Path ' generated\signature_b_prev.txt'
80+ $signatureB_prev = Get-Content ' generated\signature_b_prev.txt' - Raw
81+ }
82+
83+ # Store the updated Signature B
84+ $signatureB_current | Set-Content ' generated\signature_b_prev.txt'
85+
86+ # If Signature A is unchanged, we must check Signature B
87+ if ($signatureA_current.Trim () -eq $signatureA_prev.Trim ()) {
88+ # If Signature B is unchanged, skip generating build_id.h
89+ if ($signatureB_current.Trim () -eq $signatureB_prev.Trim ()) {
90+ Write-Host " [build_id_gen] Signature B is unchanged. Skipping Versioning\generated\build_id.h regeneration."
91+ return
92+ }
93+ Write-Host " [build_id_gen] Signature B mismatch detected."
94+ } else {
95+ # Store the updated Signature A
96+ $signatureA_current | Set-Content ' generated\signature_a_prev.txt'
97+ Write-Host " [build_id_gen] Signature A mismatch detected."
98+ }
99+ } else {
100+ Write-Host " [build_id_gen] Versioning\generated\build_id.h not present; generating..."
101+ }
102+
103+
104+ # ------------------------------------------------------------------------------
105+ # 3) GENERATE/UPDATE BUILD_ID.H
106+ # ------------------------------------------------------------------------------
107+ Write-Host " [build_id_gen] Generating new build_id.h..."
108+
109+ # Get the current git commit hash
110+ $gitHash = (git rev- parse HEAD) | Out-String
111+ $gitHashShort = (git rev- parse -- short HEAD)| Out-String
112+ $gitHash = $gitHash.Trim ()
113+ $gitHashShort = $gitHashShort.Trim ()
114+
115+ # Format: yyyy.M.d.HH:mm:ss (e.g., 2025.1.8.12:20:11)
116+ $dateTime = Get-Date - Format ' yyyy.M.d.HH:mm:ss'
117+
118+ # Check if there are uncommitted changes (sets $LASTEXITCODE = 0 if none)
119+ git diff -- quiet
120+ if ($LASTEXITCODE -eq 0 ) {
121+ $uncommittedChanges = ' false'
122+ } else {
123+ $uncommittedChanges = ' true'
124+ }
125+
126+ @"
127+ #pragma once
128+ // Auto-generated by build_id_gen.ps1
129+
130+ #define PM_BID_GIT_HASH "$gitHash "
131+ #define PM_BID_GIT_HASH_SHORT "$gitHashShort "
132+ #define PM_BID_TIME "$dateTime "
133+ #define PM_BID_UID "$gitHash -$dateTime "
134+ #define PM_BID_DIRTY $uncommittedChanges
135+ "@ | Set-Content ' generated\build_id.h'
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