Add option to tool to update patches. (#24)

This only works when hunks are just slightly off.

tools/main.toit

@@ -64,6 +64,9 @@ main args:
             --required,
         cli.Flag "ignore-errors"
             --short_help="Ignore errors when synthesizing variants.",
+        cli.Flag "update-patches"
+            --short_help="Update the patches in the variants."
+            --hidden,
       ]
       --rest=[
           cli.Option "variant"
@@ -124,6 +127,7 @@ variant_synthesize parsed/cli.Parsed --ui/cli.Ui:
   variants_root := parsed["variants-root"]
   variants := parsed["variant"]
   ignore_errors := parsed["ignore-errors"]
+  update_patches := parsed["update-patches"]
 
   variants.do: | variant/string |
     exception := catch:
@@ -133,6 +137,7 @@ variant_synthesize parsed/cli.Parsed --ui/cli.Ui:
           --output="$output_root/$variant"
           --build_path="$build_root/$variant"
           --sdk_path=sdk_path
+          --update_patches=update_patches
           --ui=ui
     if exception:
       ui.print "Failed to synthesize variant '$variant': $exception."
@@ -148,6 +153,7 @@ variant_synthesize
     --output/string
     --build_path/string
     --sdk_path/string
+    --update_patches/bool
     --ui/cli.Ui:
   if file.is_file output:
     ui.print "Output is a file."
@@ -175,6 +181,34 @@ variant_synthesize
       --chip=chip
       --ui=ui
 
+  if update_patches:
+    if file.is_file "$variant_path/partitions.csv.patch":
+      original := "$toit_root/$(toit_partition_path_for_ --chip=chip)"
+      patched := "$output/partitions.csv"
+      update_patch_
+          --from=original
+          --to=patched
+          --output="$variant_path/partitions.csv.patch"
+          --ui=ui
+
+    if file.is_file "$variant_path/sdkconfig.defaults.patch":
+      original := "$toit_root/$(toit_sdk_config_defaults_path_for_ --chip=chip)"
+      patched := "$output/sdkconfig.defaults"
+      update_patch_
+          --from=original
+          --to=patched
+          --output="$variant_path/sdkconfig.defaults.patch"
+          --ui=ui
+
+    if file.is_file "$variant_path/main.patch":
+      original := "$toit_root/$(toit_main_path_for_ --chip=chip)"
+      patched := "$output/main"
+      update_patch_
+          --from=original
+          --to=patched
+          --output="$variant_path/main.patch"
+          --ui=ui
+
 apply_directory_patch_ --patch_path/string --directory/string --strip/int=1:
   patch := file.read_content patch_path
   args := ["patch", "-d", directory]
@@ -185,6 +219,13 @@ apply_directory_patch_ --patch_path/string --directory/string --strip/int=1:
   writer.write patch
   writer.close
 
+// Same as $pipe.from but doesn't throw if the exit code is non-zero.
+pipe_from arguments/List:
+  pipe_ends := pipe.OpenPipe false --child_process_name=arguments[0]
+  stdout := pipe_ends.fd
+  pipes := pipe.fork true pipe.PIPE_INHERITED stdout pipe.PIPE_INHERITED arguments[0] arguments
+  return pipe_ends
+
 apply_file_patch_ --patch_path/string --file_path/string:
   patch := file.read_content patch_path
   args := ["patch", file_path]
@@ -193,6 +234,16 @@ apply_file_patch_ --patch_path/string --file_path/string:
   writer.write patch
   writer.close
 
+update_patch_ --from/string --to/string --output/string --ui/cli.Ui:
+  ui.print "Updating $output."
+  file.delete output
+  args := ["diff", "-aur", from, to]
+  stream := pipe_from args
+  writer := Writer (file.Stream.for_write output)
+  while chunk := stream.read:
+    writer.write chunk
+  writer.close
+
 ensure_main_ dir/string --toit_root/string --chip/string:
   if file.is_directory "$dir/main": return
   main_path := toit_main_path_for_ --chip=chip

variants/esp32-eth-clk-out0-spiram/sdkconfig.defaults.patch

@@ -1,5 +1,5 @@
---- toolchains/esp32/sdkconfig.defaults	2023-09-07 17:14:30.952105304 +0200
-+++ toolchains/esp32-eth-clk-out0-spiram/sdkconfig.defaults	2023-09-07 17:20:30.187515185 +0200
+--- toit/toolchains/esp32/sdkconfig.defaults	2023-09-20 11:21:44.091952700 +0200
++++ synn/esp32-eth-clk-out0-spiram/sdkconfig.defaults	2023-09-21 21:26:45.724049931 +0200
 @@ -31,12 +31,17 @@
  # CONFIG_SPI_SLAVE_ISR_IN_IRAM is not set
  CONFIG_UART_ISR_IN_IRAM=y
@@ -18,15 +18,15 @@
  CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ_240=y
  # CONFIG_ESP_INT_WDT is not set
  # CONFIG_ESP_TASK_WDT_EN is not set
-@@ -45,7 +49,6 @@
+@@ -45,7 +50,6 @@
  CONFIG_ESP32_WIFI_DYNAMIC_TX_BUFFER_NUM=16
  # CONFIG_ESP32_WIFI_NVS_ENABLED is not set
  CONFIG_ESP32_WIFI_TASK_PINNED_TO_CORE_1=y
 -# CONFIG_ESP32_WIFI_IRAM_OPT is not set
  CONFIG_FATFS_LFN_HEAP=y
  CONFIG_FREERTOS_THREAD_LOCAL_STORAGE_POINTERS=3
  CONFIG_FREERTOS_IDLE_TASK_STACKSIZE=1024
-@@ -77,4 +80,5 @@
+@@ -77,4 +81,5 @@
  CONFIG_SPI_FLASH_LOG_FAILED_WRITE=y
  CONFIG_SPI_FLASH_WARN_SETTING_ZERO_TO_ONE=y
  # CONFIG_WS_TRANSPORT is not set

variants/esp32-eth-clk-out0/sdkconfig.defaults.patch

@@ -1,5 +1,5 @@
---- toolchains/esp32/sdkconfig.defaults	2023-09-07 15:57:43.119413430 +0200
-+++ toolchains/esp32-eth-clk-out0/sdkconfig.defaults	2023-09-11 17:21:39.069585368 +0200
+--- toit/toolchains/esp32/sdkconfig.defaults	2023-09-20 11:21:44.091952700 +0200
++++ synn/esp32-eth-clk-out0/sdkconfig.defaults	2023-09-21 21:26:45.687383858 +0200
 @@ -31,6 +31,8 @@
  # CONFIG_SPI_SLAVE_ISR_IN_IRAM is not set
  CONFIG_UART_ISR_IN_IRAM=y

variants/esp32-eth-clk-out17-spiram/sdkconfig.defaults.patch

@@ -1,5 +1,5 @@
---- toolchains/esp32/sdkconfig.defaults	2023-09-07 17:14:30.952105304 +0200
-+++ toolchains/esp32-eth-clk-out17-spiram/sdkconfig.defaults	2023-09-07 17:20:30.187515185 +0200
+--- toit/toolchains/esp32/sdkconfig.defaults	2023-09-20 11:21:44.091952700 +0200
++++ synn/esp32-eth-clk-out17-spiram/sdkconfig.defaults	2023-09-21 21:26:45.557385967 +0200
 @@ -31,12 +31,16 @@
  # CONFIG_SPI_SLAVE_ISR_IN_IRAM is not set
  CONFIG_UART_ISR_IN_IRAM=y

variants/esp32-eth-clk-out17/sdkconfig.defaults.patch

@@ -1,5 +1,13 @@
-41a42,45
-> # CONFIG_ETH_RMII_CLK_INPUT is not set
-> CONFIG_ETH_RMII_CLK_OUTPUT=y
-> # CONFIG_ETH_RMII_CLK_OUTPUT_GPIO0 is not set
-> CONFIG_ETH_RMII_CLK_OUT_GPIO=17
+--- toit/toolchains/esp32/sdkconfig.defaults	2023-09-20 11:21:44.091952700 +0200
++++ synn/esp32-eth-clk-out17/sdkconfig.defaults	2023-09-21 21:26:45.540719572 +0200
+@@ -39,6 +39,10 @@
+ # CONFIG_ESP_PHY_CALIBRATION_AND_DATA_STORAGE is not set
+ CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ_240=y
+ # CONFIG_ESP_INT_WDT is not set
++# CONFIG_ETH_RMII_CLK_INPUT is not set
++CONFIG_ETH_RMII_CLK_OUTPUT=y
++# CONFIG_ETH_RMII_CLK_OUTPUT_GPIO0 is not set
++CONFIG_ETH_RMII_CLK_OUT_GPIO=17
+ # CONFIG_ESP_TASK_WDT_EN is not set
+ # CONFIG_ESP_DEBUG_OCDAWARE is not set
+ CONFIG_ESP32_WIFI_DYNAMIC_RX_BUFFER_NUM=16

variants/esp32-log-wifi/sdkconfig.defaults.patch

@@ -1,6 +1,6 @@
---- toolchains/esp32/sdkconfig.defaults	2023-08-31 18:38:18.473937304 +0200
-+++ toolchains/esp32-log-wifi/sdkconfig.defaults	2023-09-05 13:20:04.990901463 +0200
-@@ -54,7 +54,7 @@
+--- toit/toolchains/esp32/sdkconfig.defaults	2023-09-20 11:21:44.091952700 +0200
++++ synn/esp32-log-wifi/sdkconfig.defaults	2023-09-21 21:26:45.744049606 +0200
+@@ -53,7 +53,7 @@
  CONFIG_FREERTOS_ISR_STACKSIZE=2096
  CONFIG_FREERTOS_PLACE_FUNCTIONS_INTO_FLASH=y
  # CONFIG_FREERTOS_ENABLE_TASK_SNAPSHOT is not set
@@ -9,7 +9,7 @@
  # CONFIG_LOG_COLORS is not set
  CONFIG_LWIP_LOCAL_HOSTNAME="toit"
  # CONFIG_LWIP_DNS_SUPPORT_MDNS_QUERIES is not set
-@@ -78,4 +78,5 @@
+@@ -77,4 +77,5 @@
  CONFIG_SPI_FLASH_LOG_FAILED_WRITE=y
  CONFIG_SPI_FLASH_WARN_SETTING_ZERO_TO_ONE=y
  # CONFIG_WS_TRANSPORT is not set

variants/esp32-no-ble/sdkconfig.defaults.patch

@@ -1,5 +1,5 @@
---- toolchains/esp32/sdkconfig.defaults
-+++ toolchains/esp32-no-ble/sdkconfig.defaults
+--- toit/toolchains/esp32/sdkconfig.defaults	2023-09-20 11:21:44.091952700 +0200
++++ synn/esp32-no-ble/sdkconfig.defaults	2023-09-21 21:26:45.760716002 +0200
 @@ -9,23 +9,6 @@
  CONFIG_PARTITION_TABLE_CUSTOM=y
  CONFIG_COMPILER_OPTIMIZATION_SIZE=y
@@ -34,7 +34,7 @@
  CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ_240=y
  # CONFIG_ESP_INT_WDT is not set
  # CONFIG_ESP_TASK_WDT_EN is not set
-@@ -78,4 +64,3 @@
+@@ -77,4 +63,3 @@
  CONFIG_SPI_FLASH_LOG_FAILED_WRITE=y
  CONFIG_SPI_FLASH_WARN_SETTING_ZERO_TO_ONE=y
  # CONFIG_WS_TRANSPORT is not set

variants/esp32-qemu/sdkconfig.defaults.patch

@@ -1,5 +1,5 @@
---- toolchains/esp32/sdkconfig.defaults	2023-08-29 10:53:18.779468609 +0200
-+++ toolchains/esp32-qemu/sdkconfig.defaults	2023-08-29 10:54:22.488425944 +0200
+--- toit/toolchains/esp32/sdkconfig.defaults	2023-09-20 11:21:44.091952700 +0200
++++ synn/esp32-qemu/sdkconfig.defaults	2023-09-21 21:26:45.594052040 +0200
 @@ -33,6 +33,7 @@
  # CONFIG_ESP_ERR_TO_NAME_LOOKUP is not set
  CONFIG_ETH_SPI_ETHERNET_DM9051=y