themes: Add a new theme developer focusing on devs (#526)

* feat(themes): added new theme
* fix(themes): screenshot updated
* fix(themes): image sizing
* chore(themes): updated theme description
* style(themes/developer): fix the indentation
* refactor(themes/developer): prefix "_omb_theme_developer_" to internal functions
* refactor(themes/developer): delimit returned values with newlines

"grep -P" is not POSIX.  Instead of using PCRE to extract the results
separated by "---", we can simply separate the results with newlines
and use standard utilities (which assumes line-oriented data) to
manipulate the data.

* refactor(themes/developer): use "_omb_util_command_exists"
* refactor(themes/developer): use awk to pick the activated conda env
* fix(themes/developer): remove meaningless forks
* fix(themes/developer): use "_omb_util_put" instead of "printf"
* style(themes/developer): fix coding styles
* chore(themes/developer): clean up codes for debugging
* fix(themes/developer): fix wronge uses of arithmetic commands
* fix(themes/developer): localize variables used in functions
* refactor(themes/developer): use "return_delimited" at the end of functions
* fix(themes/developer): fix a problem that it sometimes fails to extract CPU usage
* fix(themes/developer): avoid mixing stdout

This attempted to run the commands to extract information in parallel,
but this may result in interleaved information in some operating
system (depending on the way how the C library performs buffering and
how the syscall write(2) issued by multiple processes would interfere
with one another).

There are other parts we can optimize, so we would compensate the
overhead with the optimization of other parts.

* perf(themes/developer): load prompt information through REPLY
* perf(themes/developer): reduce the number of forks
* fix(themes/developer): suppress error message of non-existent commands
* fix(themes/developer): disable prompt element with unavailable information

---------

Co-authored-by: Koichi Murase <myoga.murase@gmail.com>

themes/THEMES.md

@@ -59,6 +59,10 @@
 
 [![](demula/demula-dark.png)](demula/demula-dark.png)
 
+## `developer`
+
+[![](developer/developer_theme_2024_02_09.png)](developer/developer_theme_2024_02_09.png)
+
 ## `dos`
 
 [![](dos/dos-dark.png)](dos/dos-dark.png)

themes/developer/developer.theme.sh

@@ -0,0 +1,214 @@
+#! bash oh-my-bash.module
+
+SCM_THEME_PROMPT_DIRTY=" ${_omb_prompt_brown}✗"
+SCM_THEME_PROMPT_CLEAN=" ${_omb_prompt_bold_green}✓"
+SCM_THEME_PROMPT_PREFIX=" $_omb_prompt_green|"
+SCM_THEME_PROMPT_SUFFIX="$_omb_prompt_green|"
+
+GIT_THEME_PROMPT_DIRTY=" ${_omb_prompt_brown}✗"
+GIT_THEME_PROMPT_CLEAN=" ${_omb_prompt_bold_green}✓"
+GIT_THEME_PROMPT_PREFIX=" $_omb_prompt_green|"
+GIT_THEME_PROMPT_SUFFIX="$_omb_prompt_green|"
+
+RVM_THEME_PROMPT_PREFIX='|'
+RVM_THEME_PROMPT_SUFFIX='|'
+
+function __bobby_clock {
+  _omb_util_put "$(clock_prompt) "
+
+  if [[ $THEME_SHOW_CLOCK_CHAR == true ]]; then
+    _omb_util_put "$(clock_char) "
+  fi
+}
+
+## @var[out] REPLY
+function _omb_theme_developer__readNodeVersion {
+  local val_node=$(node --version 2>/dev/null)
+  if _omb_util_command_exists nvm; then
+    val_node="nvm $val_node"
+  else
+    # Si nvm no está instalado, utilizar "njs"
+    val_node="njs $val_node"
+  fi
+  REPLY=$val_node
+}
+
+## @var[out] REPLY
+function _omb_theme_developer__readGoVersion {
+  local val_go=$(go version 2>/dev/null | cut -d ' ' -f 3 | cut -d 'o' -f 2)
+  REPLY="go $val_go"
+}
+
+## @var[out] REPLY
+function _omb_theme_developer__read_ruby_version {
+  local val_rb=$(ruby --version 2>/dev/null | cut -d ' ' -f 2)
+  if _omb_util_command_exists rvm; then
+    val_rb="rvm $val_rb"
+  else
+    # Si nvm no está instalado, utilizar "njs"
+    val_rb="rb $val_rb"
+  fi
+  REPLY=$val_rb
+}
+
+## @var[out] REPLY
+function _omb_theme_developer__readPyVersion {
+  local val_py=$(python --version 2>/dev/null | cut -d ' ' -f 2)
+  if _omb_util_command_exists conda; then
+    local condav=$(conda env list | awk '$2 == "*" {print $1}')
+    val_py="conda<$condav> $val_py"
+  else
+    # Si nvm no está instalado, utilizar "njs"
+    val_py="py $val_py"
+  fi
+  REPLY=$val_py
+}
+
+## @var[out] REPLY
+function _omb_theme_developer__readCpuLoad__cpuLoad {
+  # Ejecutar el comando top en modo batch, filtrar por el nombre de usuario
+  # actual.  Extraer el porcentaje de carga de la CPU excluyendo el estado
+  # "idle" usando awk
+  local cpu_load=$(top -b -n 1 -u "$USER" | awk -F ',' '/Cpu\(s\)/ {gsub(/[^.0-9]/,"",$4);printf("%d", 100.0 - $4)}')
+
+  # Almacenar la carga de la CPU en la variable 'REPLY'
+  REPLY=$cpu_load
+}
+
+## @var[out] REPLY
+function _omb_theme_developer__readCpuLoad {
+  _omb_theme_developer__readCpuLoad__cpuLoad
+  local current_cpu_load=$REPLY
+
+  local color=$_omb_prompt_reset_color
+  # Condicional para verificar los rangos
+  if ((current_cpu_load <= 40)); then
+    color=$_omb_prompt_teal
+  elif ((current_cpu_load >= 41 && current_cpu_load <= 50)); then
+    color=$_omb_prompt_reset_color
+  elif ((current_cpu_load >= 51 && current_cpu_load <= 60)); then
+    color=$_omb_prompt_olive
+  elif ((current_cpu_load >= 61 && current_cpu_load <= 75)); then
+    color=$_omb_prompt_red
+  elif ((current_cpu_load >= 76)); then
+    color=$_omb_prompt_red'!'
+  fi
+  REPLY=$color$current_cpu_load
+}
+
+## @var[out] REPLY
+function _omb_theme_developer__readCpuTemp_genericLinuxTemp {
+  local file=${1:-/sys/class/thermal/thermal_zone0/temp}
+  if [[ ! -e $file ]]; then
+    REPLY=
+    return 1
+  fi
+
+  local temp_linux=$(< "$file")
+  local temp_in_c=$((temp_linux / 1000))
+  REPLY=$temp_in_c
+}
+
+## @var[out] REPLY
+function _omb_theme_developer__readCpuTemp_OPi5pTemp {
+  _omb_theme_developer__readCpuTemp_genericLinuxTemp /sys/class/thermal/thermal_zone4/temp
+}
+
+# if is a specific platfor use spacific configuration otherwise use default
+# linux configuration.
+## @var[out] REPLY
+function _omb_theme_developer__readCpuTemp_currentPlatform {
+  # 2 ways to detect the platform 1) use a env var 2) some scrapping from the
+  # current system info (this is bash so just linux is considered) env var is
+  # $PROMPT_THEME_PLATFORM
+  # TODO: this is a first basic implementation this could be better but for now
+  # is ok
+  local platform_according_env=$PROMPT_THEME_PLATFORM
+
+  # if opi5 -> search for rk3588 tag in kernel and ...
+  local opi5p_kernel_tag=$(uname --kernel-release 2>/dev/null | cut -d '-' -f 3)
+
+  if [[ $platform_according_env == OPI5P || $opi5p_kernel_tag == rk3588 ]]; then
+    REPLY=OPI5P
+  else
+    REPLY=linux
+  fi
+}
+
+## @var[out] REPLY
+function _omb_theme_developer__readCpuTemp {
+  _omb_theme_developer__readCpuTemp_currentPlatform
+  local currentPlatform=$REPLY
+
+  if [[ $currentPlatform == linux ]]; then
+    _omb_theme_developer__readCpuTemp_genericLinuxTemp
+  elif [[ $currentPlatform == OPI5P ]]; then
+    _omb_theme_developer__readCpuTemp_OPi5pTemp
+  fi
+  local temp_in_c=$REPLY
+  [[ $REPLY ]] || return 0
+
+  local color
+  # Condicional para verificar los rangos
+  if ((temp_in_c >= 1 && temp_in_c <= 40)); then
+    color=$_omb_prompt_teal
+  elif ((temp_in_c >= 41 && temp_in_c <= 50)); then
+    color=$_omb_prompt_reset_color
+  elif ((temp_in_c >= 51 && temp_in_c <= 60)); then
+    color=$_omb_prompt_olive
+  elif ((temp_in_c >= 61 && temp_in_c <= 75)); then
+    color=$_omb_prompt_red
+  elif ((temp_in_c >= 76 && temp_in_c)); then
+    color=$_omb_prompt_red!
+  fi
+  REPLY="$color${temp_in_c}°"
+}
+
+## @var[out] REPLY
+function _omb_theme_developer__readDefaultIp {
+  # this should work on every "new" linux distro
+
+  # Obtiene el nombre de la interfaz de red activa
+  local interface=$(ip -o -4 route show to default 2>/dev/null | awk '{print $5}')
+
+  # Obtiene la dirección IP de la interfaz de red activa
+  local ip_address=$(ip -o -4 address show dev "$interface" 2>/dev/null | awk '{split($4, a, "/"); print a[1]}')
+
+  REPLY=$ip_address
+}
+
+# prompt constructor
+function _omb_theme_PROMPT_COMMAND {
+  local REPLY
+  _omb_theme_developer__readCpuTemp
+  local cputemp=$REPLY
+  _omb_theme_developer__readCpuLoad # this is very slow
+  local cpuload=$REPLY
+  _omb_theme_developer__readPyVersion
+  local pyversion=$REPLY
+  _omb_theme_developer__readNodeVersion
+  local nodeversion=$REPLY
+  _omb_theme_developer__readGoVersion
+  local goversion=$REPLY
+  _omb_theme_developer__readDefaultIp
+  local defaultip=$REPLY
+
+  local tech_versions=$nodeversion
+  [[ $pyversion ]] && tech_versions+=${tech_versions:+$RVM_THEME_PROMPT_PREFIX}$pyversion
+  [[ $goversion ]] && tech_versions+=${tech_versions:+$RVM_THEME_PROMPT_PREFIX}$goversion
+  [[ $tech_versions ]] && tech_versions=$_omb_prompt_reset_color$tech_versions
+
+  local top_bar="\n$(battery_char)$(__bobby_clock)$tech_versions${cputemp:+ $cputemp}${cpuload:+ $cpuload%} $_omb_prompt_purple\h${defaultip:+ ($defaultip)} ${_omb_prompt_reset_color}in $_omb_prompt_green\w\n"
+
+  local prompt_line="$_omb_prompt_bold_teal$(scm_prompt_char_info) $_omb_prompt_green→$_omb_prompt_reset_color "
+
+  # defining the final prompt
+  PS1="$top_bar$prompt_line"
+}
+
+THEME_SHOW_CLOCK_CHAR=${THEME_SHOW_CLOCK_CHAR:-"true"}
+THEME_CLOCK_CHAR_COLOR=${THEME_CLOCK_CHAR_COLOR:-"$_omb_prompt_brown"}
+THEME_CLOCK_COLOR=${THEME_CLOCK_COLOR:-"$_omb_prompt_bold_teal"}
+THEME_CLOCK_FORMAT=${THEME_CLOCK_FORMAT:-"%Y-%m-%d %H:%M"}
+
+_omb_util_add_prompt_command _omb_theme_PROMPT_COMMAND